[Current status and problems of obstetrical care].
Amamori
Y
Y
D036861:Delivery, Obstetric / Q000379:methods; D005260:Female; D006801:Humans; D007363:Intensive Care Units, Neonatal / Q000639:trends; D009774:Obstetrics / Q000592:standards / Q000639:trends*; D011247:Pregnancy