The clinical trial.
D002986:Clinical Trials as Topic / Q000592:standards*; D003951:Diagnostic Errors; D004282:Documentation; D004311:Double-Blind Method; D004992:Ethics, Medical; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007258:Informed Consent; D010380:Peer Review; D011897:Random Allocation; D012106:Research / Q000266:history; D013223:Statistics as Topic; D014481:United States