Effect of scientific obstetrics on perinatal mortality.
D036861:Delivery, Obstetric; D005260:Female; D005313:Fetal Death; D006699:Home Care Services; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008427:Maternal Health Services / Q000592:standards*; D011247:Pregnancy; D006113:United Kingdom