title: SOURCES OF BLEEDING IN UPPER GASTROINTESTINAL HEMORRHAGE: A RE-EVALUATION.
mesh_terms: D004381:Duodenal Ulcer; D004724:Endoscopy; D004932:Esophageal and Gastric Varices; D005756:Gastritis; D006471:Gastrointestinal Hemorrhage; D005853:Geriatrics; D006470:Hemorrhage; D006801:Humans; D010438:Peptic Ulcer Hemorrhage; D013223:Statistics as Topic; D013274:Stomach Neoplasms; D013276:Stomach Ulcer
keywords: DUODENAL ULCER; ENDOSCOPY; ESOPHAGEAL VARICES; GASTRITIS; GERIATRICS; HEMORRHAGE, GASTROINTESTINAL; PEPTIC ULCER HEMORRHAGE; STATISTICS; STOMACH NEOPLASMS; STOMACH ULCER