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British 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 RatnamThe Australian & New Zealand Journal of Obstetrics & Gynaecology|May 1, 1996
A comparison between visual estimation and laboratory determination of blood loss during the third stage of labourK Razvi, S Chua, S Arulkumaran, et al.International Journal of Gynaecology and Obstetrics: the Official Organ of the International Federation of Gynaecology and Obstetrics|December 1, 1989
Pregnancy outcome in unmarried teenage nulligravidae in SingaporeA Kurup, O Viegas, K Singh, et al.Pageof 42