Concepedia
Statistics
Publications
34
Citations
1.1K
H-Index
19
Active since
1982
Affiliations
National University Hospital(Current)
National University of Singapore
KK Women's and Children's Hospital
Population Council
Instituto Chileno de Medicina Reproductiva
O. A. C. Viegas is an author at National University Hospital specializing in medicine, obstetrics, and maternal health.
Publications per year
1982–2010
Dietary protein energy supplementation of pregnant Asian mothers at Sorrento, Birmingham. II: Selective during third trimester only.
O. A. C. Viegas, P. Scott, T J Cole et al. · BMJ · 1982 · 95 citations · Full text
Agriculture, Nutrition, Nutritional Sciences +16
The performance of levonorgestrel rod and Norplant contraceptive implants: a 5 year randomized study
Irving Sivin, I Campodónico, Orawan Kiriwat et al. · Human Reproduction · 1998 · 92 citations · Full text
Medicine, Gynecology, Obstetrics +17
A randomized controlled trial of non‐stress antepartum cardiotocography
Anna M. Flynn, John Kelly, H. Mansfield et al. · BJOG An International Journal of Obstetrics & Gynaecology · 1982 · 82 citations
Nursing, Maternal Health, Obstetrics +16
Dietary protein energy supplementation of pregnant Asian mothers at Sorrento, Birmingham. I: Unselective during second and third trimesters.
O. A. C. Viegas, P. Scott, T J Cole et al. · BMJ · 1982 · 73 citations · Full text
Agriculture, Nutrition, Nutritional Sciences +17
Tramadol in labour pain in primiparous patients. A prospective comparative clinical trial
O. A. C. Viegas, Benny Khaw, S. S. Ratnam · European Journal of Obstetrics & Gynecology and Reproductive Biology · 1993 · 71 citations · Full text
Medicine, Anesthesiology, Obstetrics +16
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