Measuring maternal mortality.
Royston
E
E
Maternal Health and Safe Motherhood Programme, World Health Organization, Geneva, Switzerland.
AbouZahr
C
C
D000367:Age Factors; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008428:Maternal Mortality / Q000639:trends*; D011247:Pregnancy; D012307:Risk Factors