Obstetrics and gynecology: challenges for the 21st century.
Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois.
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Sciarra
D005193:Family Planning Services; D005260:Female; D006176:Gynecology; D006801:Humans; D007246:Infertility; D008297:Male; D008427:Maternal Health Services; D008428:Maternal Mortality; D009774:Obstetrics; D011158:Population Growth; D015995:Prevalence; D012098:Reproduction; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000517:prevention & control