[Gastroscopy in digestive hemorrhages. Considerations on 28 cases].
D005756:Gastritis; D006471:Gastrointestinal Hemorrhage; D005773:Gastroscopy; D006801:Humans; D006973:Hypertension; D006975:Hypertension, Portal; D010437:Peptic Ulcer
GASTRITIS; GASTROSCOPY; HEMORRHAGE, GASTROINTESTINAL; HYPERTENSION, PORTAL; PEPTIC ULCER