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Contraception|October 1, 1996
The effects of reformulated 2-rod Norplant implant on hemostasis after three yearsO A Viegas, S C Koh, S S RatnamBritish Journal of Obstetrics and Gynaecology|March 1, 1978
Testosterone in the molar vesicle fluid and theca-lutein cyst fluidP C Chew, S S Ratnam, H H GohThe Journal of Obstetrics and Gynaecology Research|September 1, 1999
A prospective study on the effects of reformulated 2-rod Norplant implant on haemostasis after five years of useS C Koh, O A Viegas, S S RatnamClinical Endocrinology|September 1, 1981
Control of gonadotrophin secretion by steroid hormones in castrated male transsexuals. II. Effects of androgens alone and in combination with oestradiol on the secretions of FSH and LHH H Goh, S M Karim, S S RatnamActa Obstetricia Et Gynecologica Scandinavica|January 1, 1976
Plasma hormone concentrations during the menstrual cycle of normal Chinese womenJ A Salmon, P C Chew, S S RatnamAnnals of the Academy of Medicine, Singapore|July 1, 1980
Treatment of genital warts by cryosurgery--a follow-up studyT K Ong, C S Ng, S S RatnamBiology and Society : the Journal of the Eugenics Society|June 1, 1987
Psychosocial characteristics of repeat aborters in SingaporeW F Tsoi, G E Tay, S S RatnamBritish Journal of Obstetrics and Gynaecology|June 1, 1976
Plasma oestriol in normal pregnancy in an Asian populationP C Chew, S S Ratnam, J A SalmonSingapore Medical Journal|February 1, 1994
Postnatal depression in Singapore womenL P Kok, P S Chan, S S RatnamJournal of Perinatal Medicine|January 1, 1995
Automated 24-hour ambulatory blood pressure monitoring in preeclampsiaS Montan, M Choolani, S Arulkumaran, et al.Pageof 50