Obscure gastrointestinal hemorrhage.
D003937:Diagnosis, Differential; D004630:Emergencies; D005767:Gastrointestinal Diseases / Q000150:complications; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D006402:Hematologic Diseases / Q000150:complications; D006801:Humans; D008487:Medical History Taking; D009780:Occult Blood