Obstetric care, social class, and maternal mortality.
D036861:Delivery, Obstetric; D005260:Female; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006700:Home Childbirth; D006801:Humans; D008427:Maternal Health Services / Q000266:history; D008428:Maternal Mortality; D009774:Obstetrics / Q000266:history* / Q000379:methods / Q000592:standards; D011247:Pregnancy; D011248:Pregnancy Complications / Q000266:history; D012923:Social Class; D006113:United Kingdom