title: [Decrease in duration of delivery from 1920 to 1965].
mesh_terms: D000328:Adult; D000367:Age Factors; D001724:Birth Weight; D036861:Delivery, Obstetric; D005321:Extraembryonic Membranes; D005260:Female; D005859:Germany, East; D006801:Humans; D007743:Labor, Obstetric; D009321:Natural Childbirth; D010298:Parity; D011247:Pregnancy; D011295:Prenatal Care; D012421:Rupture; D013223:Statistics as Topic; D013404:Suggestion; D013997:Time Factors
vernacular_title: Abnahme der Geburtsdauer von 1920 bis 1965.