From poor beginnings, the growth of primary care.
D000553:Ambulatory Care; D003153:Community Health Services; D003695:Delivery of Health Care; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data; D005249:Fees and Charges; D005380:Financing, Government; D006123:Group Practice; D006296:Health Services / Q000266:history; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009786:Occupational Health Services; D009934:Organization and Administration; D010044:Outpatient Clinics, Hospital / Q000706:statistics & numerical data; D010820:Physicians / Q000706:statistics & numerical data; D011320:Primary Health Care; D011635:Public Health Administration; D012572:School Health Services; D014481:United States; D014837:Voluntary Health Agencies