Infant mortality, Dr. Henry Dwight Chapin, and the Speedwell Society 1890-1920.
D002662:Child Health Services / Q000266:history*; D002674:Child, Institutionalized; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009515:New Jersey; D009518:New York; D012955:Societies, Medical / Q000266:history*