Controlled trials: the 1948 watershed.
Doll
R
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Clinical Trial Service Unit and Epidemiological Studies Unit, University of Oxford, Radcliffe Infirmary, Oxford OX2 6HE.
D002986:Clinical Trials as Topic / Q000266:history* / Q000379:methods / Q000639:trends; D004992:Ethics, Medical / Q000266:history; D049673:History, 20th Century; D016032:Randomized Controlled Trials as Topic / Q000266:history / Q000379:methods / Q000639:trends