The contributions of Wade Hampton Frost.
D004813:Epidemiology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology; D014376:Tuberculosis / Q000453:epidemiology; D014481:United States