title: The value of exploratory laparotomy in fever of undetermined etiology.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003095:Collagen Diseases / Q000453:epidemiology; D003424:Crohn Disease / Q000453:epidemiology; D005260:Female; D005334:Fever / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology; D007239:Infections / Q000453:epidemiology; D007813:Laparotomy; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology; D010488:Polyarteritis Nodosa / Q000453:epidemiology; D012507:Sarcoidosis / Q000453:epidemiology