[Developments in obstetrics in the last 20 years].
D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008428:Maternal Mortality; D009774:Obstetrics; D011247:Pregnancy; D011295:Prenatal Care
Wandlungen in der Geburtshilfe in den letzten 20 Jahren.