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Contraception|May 1, 1992
Acceptability of Norplant-2 rods as a method of family planningK Singh, O A Viegas, S S RatnamAnnals of the Academy of Medicine, Singapore|January 1, 1987
Geriatric gynaecologyA Cheang, S R Kottegoda, S S RatnamContraception|January 1, 1989
Comparative metabolic effects of three types of combined oral contraceptive pills in Chinese womenR N Prasad, D Liew, S S RatnamGynecologic and Obstetric Investigation|January 1, 1989
Selenium status in pregnancy: studies in amniotic fluid from normal pregnant womenR Karunanithy, A C Roy, S S RatnamBritish Journal of Obstetrics and Gynaecology|July 1, 1985
A comparative study of methods of oxytocin administration for induction of labourD M Gibb, S Arulkumaran, S S RatnamAdvances in Contraception : the Official Journal of the Society for the Advancement of Contraception|June 1, 1990
A three-year evaluation of metabolic changes in Singaporean Norplant-2 rod acceptorsK Singh, O A Viegas, S S RatnamAdvances in Contraception : the Official Journal of the Society for the Advancement of Contraception|June 1, 1990
A three-year clinical evaluation of Norplant-2 rods in SingaporeK Singh, O A Viegas, S S RatnamSingapore Medical Journal|April 1, 1989
Bleeding patterns and acceptability among Norplant users in SingaporeK Singh, O A Viegas, S S RatnamThe Journal of Obstetrics and Gynaecology Research|February 1, 1997
Sexual behaviour and prevalence of HIV antibodies in transsexualsS Chew, K F Tham, S S RatnamBritish Medical Journal|December 18, 1976
Coagulation and fibrinolysis in intact hydatidiform molar pregnancyF H Tsakok, S Koh, S S RatnamPageof 65