Are women who are Jehovah's Witnesses at risk of maternal death?
D000328:Adult; D002835:Christianity; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008428:Maternal Mortality / Q000639:trends*; D006473:Postpartum Hemorrhage / Q000401:mortality*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis / Q000401:mortality; D015995:Prevalence; D012016:Reference Values; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors