The transformation of maternal mortality.
Loudon
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D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008427:Maternal Health Services / Q000266:history*; D008428:Maternal Mortality / Q000639:trends*; D008880:Midwifery / Q000266:history; D009426:Netherlands; D011247:Pregnancy; D012537:Scandinavian and Nordic Countries; D013997:Time Factors; D006113:United Kingdom; D014481:United States