Clinical trials: retrospect and prospect.
D002986:Clinical Trials as Topic; D004739:England; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D012107:Research Design; D013223:Statistics as Topic; D013307:Streptomycin / Q000627:therapeutic use; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy
D013307:Streptomycin