Avoidable factors in maternal deaths.
D005260:Female; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D008427:Maternal Health Services / Q000706:statistics & numerical data; D008428:Maternal Mortality; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control*; D011295:Prenatal Care / Q000592:standards