Prognostic importance of visible vessels in hemorrhage of peptic ulcers.
D001808:Blood Vessels; D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D010438:Peptic Ulcer Hemorrhage / Q000453:epidemiology*; D012008:Recurrence; D012306:Risk; D013276:Stomach Ulcer / Q000150:complications*