Medical care for urban workers and the poor: two 19th century programs.
D001604:Berlin; D003153:Community Health Services / Q000266:history; D003365:Costs and Cost Analysis; D006296:Health Services / Q000266:history*; D049672:History, 19th Century; D007348:Insurance, Health; D007750:Labor Unions / Q000266:history; D009519:New York City; D011203:Poverty; D014505:Urban Population