The relevance of research in tropical medicine today.
D000349:Africa; D003327:Coronary Disease / Q000209:etiology; D006801:Humans; D009369:Neoplasms / Q000453:epidemiology / Q000628:therapy; D009422:Nervous System Diseases / Q000209:etiology; D012106:Research; D014330:Tropical Medicine; D014481:United States