title: Nonselective beta-blockers plus nitrates in portal hypertension: an open question.
authors.forename: Carlo
authors.initials: C
authors.lastname: Merkel
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D006975:Hypertension, Portal / Q000188:drug therapy*; D009566:Nitrates / Q000627:therapeutic use*
chemical_list: D000319:Adrenergic beta-Antagonists; D009566:Nitrates