Social and biological factors in infant mortality. II. Variation of mortality with mother's age and parity.
D001685:Biological Factors; D005260:Female; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D008423:Maternal Age; D009035:Mothers; D010298:Parity; D011247:Pregnancy; D014798:Vital Statistics
D001685:Biological Factors
INFANT; VITAL STATISTICS