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American Journal of Public Health|February 1, 1978
Effects of social disincentive policies on fertility behavior in SingaporeS B Tan, J Lee, S S RatnamArchives of Andrology|January 1, 1990
Lack of correlation of selenium level in human semen with sperm count/motilityA C Roy, R Karunanithy, S S RatnamGynecologic and Obstetric Investigation|January 1, 1989
Amniotic fluid selenium status in pre-eclampsiaA C Roy, S S Ratnam, R KarunanithyAdvances in Contraception : the Official Journal of the Society for the Advancement of Contraception|March 1, 1990
A three-year evaluation of hemostatic function in Singaporean Norplant acceptorsK Singh, O A Viegas, S S RatnamSingapore Medical Journal|December 1, 1990
Norplant contraceptive implants--a comparison of capsules versus rods in SingaporeK Singh, O A Viegas, S S RatnamBritish Journal of Obstetrics and Gynaecology|November 1, 1976
Plasma levels of oestriol-17 beta, oestriol and human placental lactogen during bed restP C Chew, H Mok, S S RatnamCanadian Journal of Public Health = Revue Canadienne De Sante Publique|March 1, 1996
Measles immunization strategy: measles antibody response following MMR II vaccination of children at one year of ageS Ratnam, R West, V Gadag, et al.Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception|September 1, 1993
Evaluation of hemostatic function following Norplant-2 rods removalK Singh, O A Viegas, S S RatnamFertility and Sterility|December 1, 1991
Microinjection of human oocytes: a technique for severe oligoasthenoteratozoospermiaS C Ng, A Bongso, S S RatnamContraception|April 1, 1989
Effects of three types of combined O.C. pills on blood coagulation, fibrinolysis and platelet functionR N Prasad, S Koh, S S RatnamPageof 50