title: Bleeding in patients with mechanical heart valves on warfarin: impact of target INR and of comorbidity.
authors.forename: A M
authors.initials: AM
authors.lastname: Njaastad
authors.forename: U
authors.initials: U
authors.lastname: Abildgaard
mesh_terms: D000925:Anticoagulants / Q000009:adverse effects*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006470:Hemorrhage / Q000139:chemically induced*; D006801:Humans; D013923:Thromboembolism / Q000209:etiology; D014859:Warfarin / Q000009:adverse effects*
chemical_list: D000925:Anticoagulants; D014859:Warfarin