title: Upper GI bleeding from below the descending duodenum.
authors.forename: Q Y
authors.initials: QY
authors.lastname: Zhang
authors.forename: X S
authors.initials: XS
authors.lastname: Wu
mesh_terms: D000328:Adult; D000368:Aged; D004386:Duodenum / Q000473:pathology*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000145:classification* / Q000150:complications / Q000473:pathology; D006396:Hematemesis / Q000150:complications; D006801:Humans; D008297:Male; D008551:Melena / Q000150:complications; D008875:Middle Aged