title: Prevention of upper gastrointestinal bleeding.
authors.forename: W L
authors.initials: WL
authors.lastname: Peterson
mesh_terms: D016638:Critical Illness / Q000401:mortality; D004381:Duodenal Ulcer / Q000150:complications; D006471:Gastrointestinal Hemorrhage / Q000517:prevention & control*; D006801:Humans; D010438:Peptic Ulcer Hemorrhage / Q000517:prevention & control; D012307:Risk Factors