Spurious gastrointestinal hemorrhage: the essential role of esophagoscopy and gastroscopy.
D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D004945:Esophagoscopy; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D005773:Gastroscopy; D006801:Humans