title: The difficulties in carrying out this study comparing three established modalities of preventing recurrent variceal hemorrhage in patients with portal hypertension.
authors.forename: S R
authors.initials: SR
authors.lastname: Shah
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D004932:Esophageal and Gastric Varices / Q000401:mortality / Q000601:surgery*; D004945:Esophagoscopy; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000401:mortality / Q000601:surgery*; D006801:Humans; D006975:Hypertension, Portal / Q000401:mortality / Q000601:surgery*; D016032:Randomized Controlled Trials as Topic; D015911:Sclerotherapy; D015996:Survival Rate
chemical_list: D000319:Adrenergic beta-Antagonists