Incidence of and relation between the common complications of pregnancy and delivery.
D000328:Adult; D000740:Anemia / Q000453:epidemiology; D001720:Birth Injuries / Q000453:epidemiology; D036861:Delivery, Obstetric; D005260:Female; D006470:Hemorrhage / Q000453:epidemiology; D006801:Humans; D006939:Hyperemesis Gravidarum / Q000453:epidemiology; D008423:Maternal Age; D010298:Parity; D011225:Pre-Eclampsia / Q000453:epidemiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D012923:Social Class; D014852:Wales