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Contraception|May 1, 1980
Effects of oral contraceptives containing 50 microgram estrogen on blood coagulation in non-Caucasian womenF H Tsakok, S Koh, S S RatnamAnnals of the Academy of Medicine, Singapore|November 1, 1990
A comparison of the effects of NORPLANT capsules and NORPLANT-2 rods on clinical chemistry: metabolic changesK Singh, O A Viegas, S S RatnamJournal of Clinical Microbiology|October 1, 1982
Comparative study of selective media for recovery of Yersinia enterocoliticaC B Head, D A Whitty, S RatnamInternational Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|January 1, 1977
Alternatives to female sterilizationS S Ratnam, M Rauff, S C ChewThe Journal of Obstetrics and Gynaecology Research|August 10, 2000
Gynaecology in the new millenniumY F Fong, K Singh, S S RatnamThe Australian & New Zealand Journal of Obstetrics & Gynaecology|May 1, 1984
Intrauterine devices and pelvic inflammatory diseaseT McCarthy, A C Roy, S S RatnamContraception|May 1, 1988
Norplant contraceptive subdermal implants: one year experience in SingaporeK Singh, O A Viegas, S S RatnamBritish Journal of Obstetrics and Gynaecology|November 1, 1976
Relation of plasma oestriol to changes in blood pressure in pregnant patients with hypertensionP C Chew, P Kurnia, S S RatnamContraception|May 1, 1992
Acceptability of Norplant-2 rods as a method of family planningK Singh, O A Viegas, S S RatnamCMAJ : Canadian Medical Association Journal = Journal De L'Association Medicale Canadienne|April 15, 1986
Lack of evidence of hepatitis D (delta) infection in Newfoundland and LabradorS Ratnam, C B Head, R W ButlerPageof 50