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Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception|June 1, 1991
New developments in contraceptive technologyK Singh, S S RatnamBritish Journal of Hospital Medicine|September 1, 1987
Sex reassignment surgery in the male transsexualS S Ratnam, A IlancheranAnnals of the Academy of Medicine, Singapore|October 1, 1988
Contributions to reproductive medicine through in-vitro fertilization: a reviewS C Ng, S S Ratnam, A Bongso, et al.Acta Geneticae Medicae Et Gemellologiae|January 1, 1984
Factors contributing to a reduction of twin perinatal mortality in SingaporeR L TambyRaja, S S RatnamCardiovascular and Interventional Radiology|August 1, 1988
Pharmacology of penile erection in humansP G Adaikan, S S RatnamInternational Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|December 1, 1984
Inadequacies of present health services and strategies to improve maternal and child health in developing countriesS S Ratnam, R N PrasadInternational Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|January 1, 1976
Plasma estradiol-17 beta as an index of fetoplacental functionP C Chew, S S RatnamMolecular Reproduction and Development|November 1, 1992
Biosynthesis of prostaglandins by human spermatozoa in vitro and their role in acrosome reaction and fertilizationA C Roy, S S RatnamInternational Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|April 13, 2018
The classification of gestational trophoblastic disease: a critical reviewK F Tham, S S RatnamThe Australian & New Zealand Journal of Obstetrics & Gynaecology|July 8, 1998
Hormone replacement therapy in the developing countriesP L Oei, S S RatnamPageof 65