Breast-feeding and infant health in Copenhagen 1941-1972.
D000367:Age Factors; D001942:Breast Feeding; D003152:Community Health Nursing; D003718:Denmark; D005247:Feeding Behavior; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D009048:Motor Skills; D012279:Rickets / Q000453:epidemiology; D012737:Sex Factors; D012959:Socioeconomic Factors