title: Gastrointestinal bleeding: one complaint, two culprits.
authors: Gerson D
authors: GD
authors: Valdez
authors: Abhijit
authors: A
authors: Raval
authors: James
authors: J
authors: Myers
authors: Christopher
authors: C
authors: Mathews
authors: Roger D
authors: RD
authors: Smalligan
mesh_terms: D000328:Adult; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D015658:HIV Infections / Q000150:complications*; D006660:Histoplasmosis / Q000150:complications*; D006801:Humans; D008297:Male