Breast feeding in the United States: extent and possible trend; a survey of 1,904 hospitals with two and a quarter million births in 1956.
D001942:Breast Feeding; D003625:Data Collection; D005260:Female; D006761:Hospitals; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D036801:Parturition; D014481:United States
INFANT NUTRITION