Breast-feeding in Copenhagen, 1938-1977. Data on more than 365,000 infants.
D000328:Adult; D001722:Birth Order; D001724:Birth Weight; D001942:Breast Feeding; D003718:Denmark; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008393:Marriage; D008423:Maternal Age; D012737:Sex Factors; D013997:Time Factors