Personal reflections on clinical investigations.
D002986:Clinical Trials as Topic; D005928:Glossitis / Q000150:complications; D049673:History, 20th Century; D006805:Human Experimentation; D006801:Humans; D008887:Military Medicine; D052756:Nutritional Sciences / Q000266:history*; D010383:Pellagra / Q000266:history*; D011832:Radiation Injuries / Q000503:physiopathology; D012621:Seasons; D014481:United States