OBSCURE GASTROINTESTINAL LESIONS OF SPONTANEOUS HEMORRHAGE.
D006471:Gastrointestinal Hemorrhage; D005853:Geriatrics; D006470:Hemorrhage; D010336:Pathology; D010438:Peptic Ulcer Hemorrhage
GERIATRICS; HEMORRHAGE, GASTROINTESTINAL; PATHOLOGY; PEPTIC ULCER HEMORRHAGE