Kumar, J, J C Osborn, A W N Cameron and A O Trounson, Oocyte maturation. In Contributions to Obstetrics and Gynaecology , Vol.2, pp.21-37. Singapore: Longman Singapore Publishers (Pte) Ltd, 1991.

Ratnam, S S and J Kumar , Amenorrhoea. In, Vol. 1, Obstetrics and Gynaecology for Postgraduates , edited by S S Ratnam, K Bhasker Rao and S Arulkumaran, compiled by S S Ratnam, K Bhasker Rao and S Arulkumaran, Vol. 1 ed. pp.201-221. Madras: Orient Longman Ltd, 1992.

Kumar, J and S C Ng, Use of the natural cycle in assisted reproductive techniques. In Contributions to Obstetrics and Gynaecology , Vol. 4, edited by SS Ratnam, S Arulkumaran and SC Ng, Contributions of Obstetrics and Gynaecology , pp.27-36. Singapore: Longman Singapore Publishers (Pte) Ltd, 1996.

Kumar, J and C Anandakumar, Tubal ectopic pregnancy - Advances in diagnosis and management. In Contribution to Obstetrics and Gynaecology . Singapore, 1996.

Kumar, J A Survey of Regulation of Assisted Reproductive Technology in Asia. In The Regulation of Assisted Reproductive Technology, edited by Jennifer Gunning & Helen Szoke. United Kingdom: Ashgate Publishing Ltd, 2003.

Kumar, J Minimizing the Retension of Embryos during Embryo Transfer in IVF. In Embryo Transfer, edited by Gautam N Allahbadia. Pg 254-262. India: Jaypee Brothers Medical Publishers (P) Ltd. 2008

Rydstrom, H , S Arulkumaran, I Ingemarsson, J Kumar and S S Ratnam, Premature rupture of the membranes at term. Obstetric outcome in relation to parity and cervical dilation at admission. Acta Obstetrica et Gynecologica Scandinavica , 65 (1986): 587-591.(Sweden). (Also reviewed and published in Obstetrical and Gynaecological Survey, 1987, 43: 558-560).

Kumar, J , A Ilancheran and S S Ratnam, Pulmonary metastases in gestational trophoblastic disease: a review of 97 cases. British Journal of Obstetrics & Gynaecology , 95 (1988): 70-74. (United Kingdom).

Kumar, J , J C Osborn, A W N Cameron, P A Batt and A O Trounson, Premature condensation of chromatin induced in goat (Capra hircus) oocytes after gonadotrophin treatment. Reproduction Fertility and Development , 2, no.6 (1990): 661-670. (Australia).

Kumar, J , J C Osborn and A W N Cameron, Luteinizing hormone and follicle-stimulating hormone induce premature condensation of chromatin in goat (Capra hircus) oocytes. Reproduction Fertility and Development , no.3 (1991): 585-591. (Australia).

Kumar, J , J C Osborn, A W N Cameron and A O Trounson, Follicular steroidogenesis and oocyte maturation following superovulation of goats (Capra hircus) with gonadotrophins. Journal of Reproduction and Fertility , 95, no. 2 (1992): 371-383. (United Kingdom).

Adaikan, P G , S C Ng, C L K Chan, J Kumar, A Biswas, B M S Marshall and S S Ratnam, Seven years experience with PGE1 in the treatment of erectile failure. International Journal of Impotence Research , Supplement 2, 4 (September 1992).

Adaikan, P G , S C Ng, C L K Chan, J Kumar, L C Lau and S S Ratnam, Intracavernous injection therapy: Long term effects - Animal studies/human results. International Journal of Impotence Research , Supplement 1, 6 (1994): S15.

Ng, S C , S L Liow, T A Bongso, J Kumar and S S Ratnam, The use of non-contact microbeam laser for assisted reproduction. Journal of Assisted Reproduction and Genetics , 12, no.3(Supplement: PS4-5) (1995): 7S. (United States).

Ng, S C , S L Liow, A Ahmadi, T A Bongso, C L K Chan, J Kumar, E L Yong and S S Ratnam, Intra-cytoplasmic sperm injection (ICSI) in severe male factor patients and patients with failed fertilization without male factor: Experience from the National University Hospital, Singapore. Journal of Assisted Reproduction and Genetics , 12, no.3 Supplement: OC227 (1995): 83S. (United States).

Ng, S C , S Emmanuel, T A Bongso, C L K Chan, J Kumar and S S Ratnam, ART practice in Singapore. Journal of Assisted Reproduction and Genetics , 13, no. 6 (1996): 527-535. (United States).

Yong, E L , S C Ng, C L K Chan, J Kumar, L S Teo and S S Ratnam, Chronic low dose follicle stimulating hormone and clomiphene/human menopausal gonadotrophin for induction of ovulation. Gynaecological Endocrinology , 11 (1997): 35-42. (United Kingdom).

Yong, E L , S C Ng, C L K Chan, J Kumar and S S Ratnam, Responses of polycystic ovarian syndrome and related variants to low dose follicle stimulating hormone. International Journal of Gynaecology & Obstetrics , 57 (1997): 305-311. (United States).

Fong, C Y , T A Bongso, S C Ng, J Kumar, A O Trounson and S S Ratnam, Blastocyst transfer after enzymatic treatment of the zona pellucida: improving in-vitro fertilization and understanding implantation. Human Reproduction , 13, 10 (1998): 2926-2932. (United Kingdom).

Chan, C L K , J Kumar, E L Yong, C Y Fong, T A Bongso and S C Ng, The first 2 case reports of frozen embryo donation twin pregnancies in Singapore - Hormonal profiles and obstetrical outcome. Journal of Obstetrics and Gynaecology Research , 24 (1998): 203-209.

Kumar, J and S C Ng, Treatment of infertility associated with endometriosis. Current Obstetrics and Gynaecology , 8 (1998): 197-203.

Bongso, T A , C Y Fong, J E Mathew, L C Ng, J Kumar and S C Ng, The benefits to human IVF by transferring embryos after the in vitro-embryonic block: alternatives to day-2 transfers. Assisted Reproduction Reviews , 9, 2 (1999): 70-78. (United States).

Loh, F H , Anna Tan, J Kumar and S C Ng, Ovarian response after laparoscopic ovarian cystectomy for endometriotic cysts in 132 monitored cycles. Fertility and Sterility , 72, 2 (1999): 316-321. (United States).

Foong, L C , B Bhagavath, J Kumar and S C Ng, Ovarian Hyperstimulation syndrome is associated with reversible impairment of vascular reactivity. Fertility and Sterility , 78, 6 (2002): 1159-1163.

Ow, R S O , J Kumar and J Leo, IVF patients: Perceived stress and spousal involvement during treatment. British Journal of Infertility Counselling 1999.

Wong, P C , S H Heng, J Kumar, E L Tan, S C Yeoh and S S Ratnam, Expectant treatment versus conservative treatment in the management of mild endometriosis. Asia-Oceania Journal of Obstetrics and Gynaecology , 12, no.1 (March 1986): 43-47. (Japan).

Kumar, J , S Karim and S S Ratnam, Pre-induction cervical ripening with intravenous prostaglandin E2 (PGE2). Singapore Journal of Obstetrics & Gynaecology, 17, no.2 (July 1986): 103-108. (Singapore).

Kumar, J , D K Sen, H A Sathananthan and S S Ratnam, Ultrastructure of early human chorionic villus obtained by chorionic villus sampling. Singapore Journal of Obstetrics & Gynaecology , 20 (1989): 66-75. (Singapore).

Kumar, J, Oocyte maturation and its clinical significance in assisted reproductive technology. Annals of Academy of Medicine Singapore , 21, no. 4 (1992): 498-503. (Singapore).

Ratnam, S S , S Devendra, B M S Marshall, C Anandakumar, Y C Wong, V H H Goh, T A Bongso, C L K Chan, J Kumar and S C Ng, Stimulation regimes in assisted reproductive technology (ART) programme: Experience in the University Hospital, Singapore. Annals of Academy of Medicine Singapore , 22, no.3 (1993): 351-354. (Singapore).

Ng, S C , J Kumar, E L Yong, C L K Chan, S L Liow, V C N Tok, T A Bongso and S S Ratnam, Novel approaches to the management of male subfertility. Singapore Journal of Obstetrics & Gynaecology , 25, no.1 (1994): 26-29.

Ong, M L , S C Ng, C L K Chan, J Kumar and S S Ratnam, Intermittent ovarian failure with resulting pregnancy following cyclical hormonal therapy. Singapore Journal of Obstetrics & Gynaecology , 26, no.3 (1995): 212-213.

Chan, C L K , J Kumar, M L Ong, S C Ng, T A Bongso and S S Ratnam, The first frozen embryo donation pregnancy for hypergonadotrophic hypergonadism in Singapore - hormonal profile and obstetric outcome. Medical Journal of Malaysia , 51, no. 4 (1996): 482-484.

Chew, S S L , J Kumar, L C Foong and S C Ng, Assisted reproductive techniques - promises and problems. Singapore Medical Journal , 40, 2 (1998): 504-508.

Khalil, R , S S L Chew, E L Yong, J Kumar and S C Ng, The Clinical Management of Male Infertility. Singapore Medical Journal , 40, 2 (1999): 291-297.

Kumar, J, Pelvic inflammatory disease. Singapore Family Physician , 22, no.1 (1996): 21-25. (Singapore).

Chew, S S L , C L K Chan, J Kumar, E L Yong, S S Ratnam and S C Ng, Patient care: Infertility. Asian Medical News , 18, no. 1 (1996): 20-22. (Singapore).

Razvi, K , S S L Chew, E L Yong, J Kumar and S C Ng, A guide to treating male infertility. Asian Medical News , 19, no. 7 (1997): 20-21.

Tambyraja, R L , S S Ratnam, C C Khong, T H Ho and J Kumar, Hexoprenaline - A unique tocolytic agent. In 8th New Zealand Congress of Obstetrics and Gynaecology , 15-19 February 1982, Auckland, New Zealand, 1982.

Ilancheran, A , S S Sithampalam and J Kumar, Retrospective analysis of 86 cases of pulmonary choriocarcinoma. In Proceedings, 10th World Congress in Obstetrics and Gynaecology , Los Angeles, United States, 1982.

ILANCHERAN, A , J Kumar and S S Ratnam, Pulmonary metastatic carcinoma - a review of 96 cases. In Xth World Congress in Obstetrics and Gynaecology , 1982, United States, 1982.

Kumar, J , A Ilancheran and S S Ratnam, Pulmonary metastasis in gestational trophoblastic disease. In Proceedings, 3rd World Congress on Gestational Trophoblastic Neoplasms , 26-29 October 1986, Rio de Janeiro, Brazil, 1986.

Kumar, J , J C Osborn, A W N Cameron, P A Batt and A O Trounson, PMSG induces premature condensation of chromatin in goat oocytes. In 21st Australian Society for Reproductive Biology (ASRB) Conference . ASRB (Australian Society of Reproductive Biologists) 1989, September 1989. (Paper presented at 21st Australian Society for Reproductive Biology (ASRB) Conference, 25-27 September 1989, Monash University, Melbourne, Australia).

Kumar, J , J C Osborn and A W N Cameron, Abnormal follicular fluid steroid levels are seen in goats superovulated with PMSG. In Proceedings of the 22nd Annual Meeting of the Australian Society of Reproductive Biology , 24-26 September 1990, Perth, Australia, pp. 39. Australia: Australian Society of Reproductive Biology, 1990.

Cameron, A W N, J Kumar and P A Batt, LH and FSH may cause abnormal maturation of oocytes in goats. In Proceedings of the 22nd Annual Conference of the Australian Society for Reproductive Biology (ASRB) , 24-26 September 1990, University of Western Australia, Perth, Australia, pp. 11, 1990.

Ratnam, S S and J Kumar , An overview of assisted reproductive techniques. Paper presented at XXXV All India Obstetrics and Gynaecology Congress, 27-30 December 1991, Madras, India.

Kumar, J and S S Ratnam, Ovarian hyperstimulation regimens in subfertility and assisted reproductive techniques. Paper presented at XXXV All India Obstetrics and Gynaecology Congress, 27-30 December 1991, Madras, India.

Ng, S C , J Kumar, C L K Chan and S S Ratnam, Folliculogenesis and its regulation (Abstract). In V Scientific Meeting Chilean Society of Fertility , 16-18 November 1992, Santiago, Chile. Chile, 1992.

Ng, S C , E L Yong, T A Bongso, J Kumar, C L K Chan and S S Ratnam, Genetic aspects of male infertility . International Journal of Gynaecology & Obstetrics , Supplement 1, 46 (1994). (Paper presented at XIV FIGO World Congress of Gynecology and Obstetrics, 24-30 September 1994, Montreal, Canada).

Ng, S C , C L K Chan, J Kumar and S S Ratnam, Reproduction after 35: Medical issues in assisted reproduction . International Journal of Gynaecology & Obstetrics , Supplement 3, 46 (1994): 5. (Paper presented at XIV FIGO World Congress of Gynecology and Obstetrics, 24-30 September 1994, Montreal, Canada).

Ng, S C , J Kumar, S L Liow, G A Ahmadi Roknabadi, T A Bongso and S S Ratnam, Micromanipulation in Assisted Reproductive Techniques. In First National Congress on Assisted Reproduction and Advances in Infertility Management , 18-20 November 1994, Bombay, India, pp. 25-26. Bombay: Indian Association of Assisted Reproduction, 1994.

Kumar, J , T A Bongso, C Y Fong and S S Ratnam, Role of co-cultures in assisted reproduction. In First National Congress on Assisted Reproduction and Advances in Infertility Management , 18-20 November 1994, Bombay, India. India: Indian Society for Assisted Reproduction, 1994.

Ratnam, S S and J Kumar, Assisted reproductive techniques (ART): Which procedure and where? In 38th All India Congress of Obstetrics and Gynaecology , 27-30 December 1994, Coimbatore, India, pp. 5. Coimbatore, 1994.

Kumar, J, Natural cycle in assisted reproductive techniques (ART). Why has it not caught on? In 38th All India Congress of Obstetrics and Gynaecology , 27-30 December 1994, Coimbatore, India, pp. 27. India, 1994.

Kumar, J, Management of postpartum haemorrhage. Paper presented at Asia-Oceania Federation of Obstetrics and Gynaecology (AOFOG)- Federation of Obstetrics and Gynaecology Societies of India (FOGSI) Workshop on "Maternal and Child Health", 2-3 January 1995, Coonoor, India.

Ng, S C , S L Liow, A Ahmadi, T A Bongso, J Kumar, C L K Chan and S S Ratnam, The use of non-contact microbeam laser for assisted reproduction. In IX World Congress on In vitro Fertilization and Alternated Assisted Reproduction , 3-7 April 1995, Vienna, Austria, pp. 29-34. Bologna: Monduzzi Editore, 1995.

Loh, F H , C Yap, S C Ng, C L K Chan, J Kumar and S S Ratnam, Recurrence of endometriosis after laparoscopic ovarian cystectomies. In 4th Biennial Meeting of the International Society for Gynecologic Endoscopy , 26-29 April 1995, London, United Kingdom, pp.17. United Kingdom: Blackwell Scientific, 1995.

Loh, F H , H A Yap, S C Ng, C L K Chan, J Kumar and S S Ratnam, Retrospective study comparing between laparoscopic approach and conventional laparotomy to cystectomies of endometriomas. In Fifteenth Asian and Oceanic Congress of Obstetrics and Gynaecology , 15-20 October 1995,

Chan, C L K , S S L Chew, F H Loh, J Kumar, S C Ng and S S Ratnam, Laparoscopic adhesiolysis in National University Hospital in Singapore. In Fertility Society of Australia and AGES Meeting , 19-26 November 1995, Melbourne, Australia, pp. 27. Australia: Australian Fertility Society and Australian Gynaecological Endoscopy Society, 1995.

Ng, S C , S L Liow, J Kumar, C L K Chan, E L Yong, T A Bongso and S S Ratnam, Recent advances in the treatment of the infertile male In 3rd International Scientific Meeting of the Royal College of Obstetrics and Gynaecology , 12-15 March 1996, New Delhi, India, pp. 104. India, 1996.

Chan, C L K , J Kumar, F H Loh and S C Ng, The experience of laparoscopic management of ectopic pregnancies at National University Hospital in Singapore. In American Association of Gynecologic Endoscopists, 25th Annual Meeting, 25-29 September 1996, Chicago Hilton & Towers, Chicago, Illinois, United States, 1996.

Ng, S C , C L K Chan, J Kumar, E L Yong, T A Bongso and S S Ratnam, The use of ART in endometriosis. In Vth World Congress on Endometriosis, 21-24 October 1996, Yokohama, Japan, pp. 40. Japan: Parthenon Publishing, 1996.

Bongso, T A , C Y Fong, S C Ng, J Kumar, A O Trounson and S S Ratnam, Improving the success of human IVF through day 5 and 6 transfers the use of improved in vitro systems. Journal of Assisted Reproduction and Genetics , 14, no. 5 (1997): 13S. (Paper presented at 10th World Congress on IVF and Assisted Reproduction, 13-17 May 1997, Vancouver, Canada).

Pathiraja, R P , E L Yong, C L K Chan, J Kumar, S S Ratnam and S C Ng, FSH for PCOS and Like States . In Sri Lanka College of Obstetricians and Gynaecologists International Congress, Reproductive Health - The Way Forward , 3-7 September 1997, Colombo, Hotel Galadari, Sri Lanka, pp. 40. Sri Lanka, 1997.

Bongso, T A, C Y Fong, S C Ng, J Kumar, A O Trounson and S S Ratnam, Improving the success of human IVF through Day 5 & 6 transfers : the use of improved in vitro systems. In 10th World Congress On In Vitro Fertilisation . Canada, 1997. (Journal of Assisted Reproduction and Genetics 1997; 5 (suppl) : 13S).

Kumar, J, Current Practices in ART: Natural Cycles in IVF. In XVI Asian & Oceania Congress of Obstetrics & Gynaecology , 14-19 June 1998, Kuala Lumpur, Malaysia, 1998.

Kumar, J, ART Where do we stand? - OGSSI Oration. In XV Annual Conference of the O&G Society of Southern India, OGSSI . India, 1999. (Paper presented at International Conference on Current Concepts in Obstetrics & Gynaecology, 13-14 February 1999, India).

Kumar, J, Endometriosis in Infertility. In Annual Conference of the O&G Society of Southern India (OGSSSI) . India, 1999. (Paper presented at International Conference on Current Concepts in Obstetrics & Gynaecology, 13-14 February 1999, India).

Kumar, J, Regulation of Assisted Reproductive Technologies (ART) in Singapore. In The Nurse in the Infertile Couple, Infertility Nurses International Workshop, 11th World Congress on In-Vitro Fertilization & Human Reproductive Genetics , 9 May 1999, Sydney, Australia, 1999.

Kumar, J, ART and Endometriosis. In Insight 99: Conference on Obstetrics & Gynaecology, ART & Endoscopy organised by the Centre for Assisted Reproduction & Endoscopy. , 24-25 July 1999, Rao Hospital, Bangalore, India. India, 1999.

Kumar, J, Controlled Ovarian Stimulation in the 3rd Millenium. In Insight 99: Conference on Obstetrics & Gynaecology, ART & Endoscopy organised by the Centre for Assisted Reproduction & Endoscopy. , 24-25 July 1999, Rao Hospital, Bangalore, India. India, 1999.

Kumar, J, Infertility - A Practical Approach. In Insight 99: Conference on Obstetrics & Gynaecology, ART & Endoscopy organised by the Centre for Assisted Reproduction & Endoscopy. , 24-25 July 1999, Rao Hospital, Bangalore, India. India, 1999.

Kumar, J, Ovarian Hyperstimulation Syndrome. In Insight 99: Conference on Obstetrics & Gynaecology, ART & Endoscopy organised by the Centre for Assisted Reproduction & Endoscopy. , 24-25 July 1999, Rao Hospital, Bangalore, India. India, 1999.

Kumar, J, Regulation of Assisted Reproductive Technologies (ART) in Asia. In 16th World Congress on Fertility & Sterility and the 54th Annual Meeting of the American Society for Reproductive Medicine. , 1999. (Paper presented at Post Graduate Course on "AnInternational Perspective on Legal & Ethical considerations for the ART Lab"., 3-9 October 1999, San Francisco, California, United States).

Kumar, J, New Assisted Reproductive Technologies (ART) in Singapore. In 16th World Congress on Fertility & Sterility and the 54th Annual Meeting of the American Society for Reproductive Medicine. , 1999. (Paper presented at Post-Graduate Course on "An International Perspective on Legal and Ethical considerations for the ART Lab"., San Francisco, California, United States).

Loh, F H , Anna Tan, J Kumar and S C Ng, Ovarian response in 132 monitored cycles after laparoscopic ovarian cystectomy for endometriotic cysts. In 8th Annual Congress of Internation Society for Gynecologic Endoscopy . Canada, 1999.

Kumar, J, Recombinant Gonadotrophins. In 23rd All Kerala Conference of Obstetrics & Gynaecology Society meeting , 9-11 February 2001, Trivandrum, Kerala, India, 2001.

Kumar, J, A survey of regulation of Assisted Reproductive Technology (ART) in Asia. In An International Satellite Symposium to the IFFS 2001, 17th World Congress on Fertility and Sterility , 23 November 2001, Australia, 2001.

Kumar, J, Ovulation Induction and Natural Cycle ART. In XII Annual Congress of the Obstetrics & Gynaecological Society of Indonesian (KOGI) Jogjakarta, Indonesia, 4 -9 July, 2003.

Kumar, J, Ovarian Stimulation in Protocols in Assisted Reproductive Techniques (ART). In XII Annual Congress of the Obstetrics & Gynaecological Society of Indonesian (KOGI) Jogjakarta, Indonesia, 4 -9 July, 2003.

Kumar, J, Management of the Poor Responder in Induction of Ovulation and Assisted Reproductive Techniques (ART). In XII Annual Congress of the Obstetrics & Gynaecological Society of Indonesian (KOGI) Jogjakarta, Indonesia, 4 -9 July, 2003.

Ng, S C , K F Tham, J Kumar, C L K Chan, E L Yong and S S Ratnam, Ovulation induction and ovarian cancer - a true correlation? In 2nd Singapore Obstetrics and Gynaecology Congress , 8 October 1995, Orchard Hotel, Singapore, pp. 27. Singapore: Obstetrical and Gynaecological Society of Singapore, 1995.

Ng, S C , J Kumar, C L K Chan, F H Loh and S Arulkumaran, Establishment of diagnosis in PID: Recent advances. In 30th Singapore-Malaysia Congress of Medicine , 1-4 August 1996, Singapore, pp. 37. Singapore: Academy of Medicine, Singapore, 1996.

Kumar, J , F H Loh, C L K Chan and S C Ng, Laparoscopic salpingostomy for tubal ectopic pregnany. 6th Annual Meeting of the International Society of Gynaecologic Endoscopy, Singapore, 6, 1 (1997): 8-34.

Chan, C L K , S C Ng, F H Loh, J Kumar, E L Yong and S S Ratnam, Two year experience after the establishment of outpatient hysteroscopy without anaesthesia at the National University Hospital in Singapore 6th Annual Meeting of The International Society of Gynaecologic Endoscopy , 6, 1 (1997): 8-34.

Loh, F H , J Kumar, C L K Chan and S C Ng, Tissue thermal changes during haemostasis with bipolar coagulation. 6th Annual Meeting of the Interntional Society of Gynaecologic Endoscopy , 6, 1 (1997): 4-38.

Kumar, J, Dilemmas in Ectopic Pregnancy: Expected Management of Ectopic Pregnancy. In XVII Asian & Oceanic Congress of Obstetrics & Gynaecology , 9-14 July 2000, Westin Stamford, Singapore. Singapore, 2000.

Kumar, J, "Intra-uterine insemination: Indications and Techniques.". In 4th Singapore Congress in Obstetrics & Gynaecology/1st Singapore-Malaysia Conference in Obstetrics & Gynaecology , 16 January 2003, Singapore.

Kumar, J, Ovarian stimulation regimens and clinical protocols in Assisted Reproductive Techniques. Paper presented at Symposium on Subfertility, 17 July 1994. (Organised by the Sri Lankan College of Obstetricians and Gynaecologists and the Department of Obstetrics and Gynaecology, National University of Singapore).

Kumar, J, Laboratory requirements and protocols in Assisted Reproductive Techniques. Paper presented at Symposium on Subfertility, 17 July 1994. (Organised by the Sri Lankan College of Obstetricians and Gynaecologists and the Department of Obstetrics and Gynaecology, National University of Singapore).

Kumar, J, Ovarian stimulation and induction of ovulation. Paper presented at Workshop on Sperm Processing for Medically Assisted Conception, 30-31 July 1995, Colombo, Sri Lanka.

Kumar, J, Intra-uterine insemination techniques and results. Paper presented at Workshop on Sperm Processing for Medically Assisted Conception, 30-31 July 1995, Colombo. (Organized by the Faculty of Medicine, University of Colombo, Sri Lanka and the Department of Obstetrics and Gynaecology, National University of Singapore).

Kumar, J, Complications of operative laparoscopy. Paper presented at Workshop on Gynaecological Endoscopy, 28-29 June 1996, Padang, Sumatra, Indonesia.

Kumar, J, Intra-uterine insemination: Techniques and results. Paper presented at Workshop on Sperm Processing for Medically Assisted Conception, 9-10 August 1996, Sri Ramakrishna Hospital, ART Centre, Coimbatore, India.

Kumar, J, Ovarian stimulation and induction of ovulation. Paper presented at Workshop on Sperm Processing for Medically Assisted Conception, 9-10 August 1996, Sri Ramakrishna Hospital, ART Centre, Coimbatore, India.

Kumar, J, The endocrinology of PCOS and new perspectives in management. In 9th Post-graduate Course in Reproductive Endocrinology , 16-18 June 1997, Far Eastern University, Manila, Philippines.

Kumar, J, Management of Common Ovulatory Disorders. In 9th Post-graduate Course in Reproductive Endocrinology , 16-18 June 1997, Far Eastern University, Manila, Philippines.

Kumar, J, Diagnosis and Management of Luteal Phase Defects (LPD). In 9th Post-graduate Course in Reproductive Endocrinology , 16-18 June 1997, Far Eastern University, Manila, Philippines (Accepted for publication).

Kumar, J, Treatment of Ovulatory Dysfunction with Gonadotrophins In 10th Annual Scientific Meeting of Indonesian Obstetrical and Gynaecological Association , 30 June - 3 July 1997, Ujung - Pandang, Indonesia

Kumar, J, Managment of Male Infertility . In 7th National Congress of Indonesian Society of Andrology , 7-9 August 1997, Bandung, Indonesia.

Kumar, J, Impact of Endometriosis on Reproductive Outcome of Infertile Patients. In 10th Postgraduate Course in Reproductive Endocrinology , 20-22 May 1998, Far Eastern University, Manila, Philippines. Philippines, 1998.

Kumar, J, Treatment alternatives in Clomiphene Failure Infertility. In 10th Postgraduate Course in Reproductive Endocrinology , 20 May 1998 - 22 May 2998, Far Eastern University, Manila, Philippines. Philippines, 1998.

Kumar, J, Treatment of hyperinsulinaemia: key to total management of polycystic ovarian syndrome? . In 5th Postgraduate Course in Practical Obstetrics & Gynaecology, United Doctor's Medical Centre, Manila , 9-11 March 1999, Philippines, 1999.

Kumar, J, Practical Approaches to Infertility Problem: Evidence based practice. In 5th Postgraduate Course in Practical Obstetrics & Gynaecology, United Doctor's Medical Centre, Manila , 9-11 March 1999, Philippines, 1999.

Kumar, J, Laparoscopic Management of Ectopic Pregnancy. In 1st Joint Gynaecologic EndoscopyWorkshop, organised by Department of Obstetrics & Gynaecology University of Philippines, National University of Singapore & University of New South Wales (Australia) , 12-14 March 1999, Philippines, 1999.

Kumar, J, Endometrial Ablation/Resection & Hysteroscopic Management of Intra-Uterine Septa & Synechiae. In 1st Joint Gynaecologic Endoscopy Workshop, organised by Department of Obstetrics & Gynaecology of University of Philippines, National University of Singapore, University of New South Wales (Australia) , 12-14 March 1999, Philippines, 1999.

Kumar, J, Recurrent Endometriosis, Diagnosis and Treatment. In 11th Postgraduate Course in Reproductive Endocrinology, Far Eastern University. , 9-11 June 1999, Manila, Philippines. Philippines, 1999.

Kumar, J, Ovarian Hyperstimulation Syndrome: Facts and Fallacies. In 11th Postgraduate course in Reproductive Endocrinology, Far Eastern University. , 9-11 June 1999, Manila, Philippines. Philippines, 1999.

Kumar, J, Intra-uterine Insemination: An update . In 11th Postgraduate Course in Reproductive Endocrinology, Far Eastern University. , 9-11 June 1999, Manila, Philippines. Philippines, 1999.

Kumar, J, Ovarian Hyperstimulation in ART. In Seminar on Infertility and ART: organised by the Indore Obsterical & Gynaecological Society. , 22 July 1999, Indore, Madhya Pradesh, India. India, 1999.

Kumar, J, Fertility drugs increase the incidence of ovarian carcinoma - debate. Paper presented at All India International on Update in Infertility organised by the Centre for Infertility and Assisted Reproduction., 22-24 April 2000, Gunasheela Surgical & Maternity Hospital, Bangalore, India.

Kumar, J, GnRH-antagonists - will this revolutionize ART treatment. Paper presented at All India International on Update in Infertility organised by the Centre for Infertility and Assisted Reproduction., 22-24 April 2000, Gunasheela Surgical & Maternity Hospital, Bangalore, India.

Kumar, J, Protocols for superovulation in IVF & Ovulation Induction Paper presented at At Symposium of the Indonesian Obstetrical & Gynaecological Society (POGI), 18 June 2000, Jakarta, Indonesia.

Foong, L C , B Bhagavath, J Kumar and S C Ng, Skin Vascular Reactivity in Women with Ovarian Hyperstimulation Syndrome . 56th Annual Meeting of the American Fertility Society , 74, 3s (2000): 143.

Kumar, J, Practical Approach to Investigating and Treating a Subfertile Couple. In Obstetrics & Gynaecology organised by Singapore International Foundation (SIF) and Ministry of Health , 11-21 February 2001, Yangon & Mandalay, Myanmar, 2001.

Kumar, J, Current Approaches to Endometriosis associated Infertility In 13th Post Graduate Course in Reproductive Endocrinology, Far Eastern University. , 30-31 May 2001, Philippines, 2001.

Kumar, J, Ovulation Induction. Recombinant FSH vs Urinary FSH. In 13th Post-Graduate Course in Reproductive Endocrinology, Far Eastern University. , 30-31 May 2001, Philippines, 2001.

Kumar, J, Evaluation and Management of Male Infertility. In 13th Post-Graduate Course in Reproductive Endocrinology, Far Eastern University. , 30-31 May 2001, Philippines, 2001.

Kumar, J, Fertility drugs and Ovarian Cancer - what is the evidence. In 2nd Annual Meeting of the Association of Tamil Nadu Members of the RCOG. , 29 June - 1 July 2001, Chennai, India, 2001.

Kumar, J, Endometriosis-related Infertility: Management Options. In SIF - Myanmar Joint Symposium Workshop. , 3-15 March 2002, Myanmar, 2002.

Kumar, J, Intra-uterine Insemination: An Update. In SIF-Myanmar Joint Symposium and Workshop , 3-15 March 2002, Myanmar, 2002.

Kumar, J, "Endometriosis-related Infertility" - What are the treatment options. In XIII Annual Scientific Meeting of POGI (Indonesian Society of Obstetrics & Gynaecology) , 30 June - 3 July 2002, Malang, Indonesia, 2002.

Kumar, J, Organisation of Clinical Services and Research in Reproductive Medicine. In SIF-Myanmar Joint Meeting on "Shaping the Future of Obstetrics & Gynaecology", Yangon & Mandalay, Myanmar, 17-21 October 2003.

Kumar, J, "Practical Approach to Investigation and treatment of a subfertile couple; "Assisted Reproductive Techniques"; "Management of PCOS-related subfertility"; "Ovarian Hyperstimulation Syndrome"; "Indications and Ovarian Stimulation for IUI". In Symposium and workshop on managment of infertility organised by Bangladesh Fertility Society , 29-30 March 2003, Dhaka, Bangladesh, 2003.

Kumar, J, Treatment of hyperinsulinemia - have we finally found a cure for PCOS? In 16th Post-Graduate Course in Reproductive Endocrinology, Far Eastern University. , 13-15 May 2004, Philippines, 2004.

Kumar, J, Pelvic endometriosis - how should it be managed? In 16th Post-Graduate Course in Reproductive Endocrinology, Far Eastern University. , 13-15 May 2004, Philippines, 2004.

Kumar, J, Ovulation Induction and Gynaecologic Cancer. In 16th Post-Graduate Course in Reproductive Endocrinology, Far Eastern University. , 13-15 May 2004, Philippines, 2004.

Papers presented at"Basic Course on Assisted Reproductive Techniques (ART) organised by the Department of Obstetrics & Gynaecology, National University Hospital. These courses were organised annually for doctors from regional and international countries from 1991 - 2001 (total of 12 courses):

1. Kumar, J, Folliculogenesis and oocyte maturation.
2. Kumar, J, The natural cycle.
3. Kumar, J. Ethics and legal issues in Assisted Reproductive Techniques (ART).
4. Kumar, J. The ART Patient: Recruitment & Counselling.
5. Kumar, J. Indications for Assisted Reproductive Techniques (ART) & Ovarian Stimulation.
6. Kumar, J. Ethics & Counselling in Assisted Reproductive Techniques (ART).

Kumar, J, Preoperative preparation. Paper presented at First Asian Pacific Congress of Endoscopic Surgery, Gynaecology Endoscopy Symposium and Workshop, Singapore, 8-9 August 1993.

Kumar, J, Outpatient approach to subfertile couple. Paper presented at Second Annual Dialogue with College of General Practitioners, 10 October 1993, Singapore. (Organised by Department of Obstetrics and Gynaecology, National University Hospital, College of General Practitioners, Singapore).

Kumar, J, Natural cycle IVF. Paper presented at Continuing Medical Education (CME) Symposium, 22 October 1993, Mount Elizabeth Hospital, Singapore.

Kumar, J, Vaginal discharge and pelvic inflammatory disease. Paper presented at Continuing Medical Education (CME) Module 8, 13 May 1994. (Organised by the College of Family Physicians, Singapore).

Kumar, J, Complications of Laparosocopic Surgery. Paper presented at First Advanced Course in Laparoscopic Surgery, 18-20 May 1995, Animal Holding Unit, Singapore.

Kumar, J, Ectopic pregnancy revisited: National university hospital experience. Paper presented at Second Advanced Course in Laparoscopic Surgery, 16-18 May 1996, National University Hospital, Singapore.

Kumar, J, Why are Singaporean Men Subfertile? Paper presented at 1st NUH - Faculty of Medicine Annual Scientific Meeting, 28-29 June 1997, Singapore.

Kumar, J, How is subfertility managed? Flowchart of management till ART. Paper presented at 1st Workshop on Professional Counselling in ART, 5-6 April 2000, National University Hospital, Singapore.

Kumar, J, IVF Treatment: What happens before, during and after. Paper presented at Public Symposium on Infertility and In-Vitro Fertilization (IVF) - Benefits and Supportive Counselling, 8 April 2000, National University Hospital, Singapore.

Kumar, J, IVF Treatment: What happens before, during & after. Paper presented at Second Public Symposium on "Infertility and Preparing for In-Vitro Fertilization" Stress and Emotional Reactions., 7 April 2001, Revenue House Auditorium, Singapore.

Kumar, J, Normal Male and Female Sexual Response. Paper presented at 9th Symposium on Male and Female Sexual Dysfunction, 17-18 November 2001, Singapore.