Health care research: old wine in new bottles.
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Rockefeller Foundation.
D015987:Effect Modifier, Epidemiologic; D004813:Epidemiology / Q000266:history; D006302:Health Services Research / Q000266:history* / Q000379:methods; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D010043:Outcome and Process Assessment, Health Care / Q000266:history