History repeats itself--again.
Freeman
P B
PB
D003695:Delivery of Health Care / Q000191:economics / Q000639:trends*; D006282:Health Personnel / Q000191:economics; D049671:History, 18th Century; D049673:History, 20th Century; D006801:Humans; D007349:Insurance, Health, Reimbursement / Q000191:economics; D009907:Optometry / Q000191:economics / Q000266:history / Q000639:trends*; D014481:United States