title: Variation in the prothrombin-time ratio during oral anticoagulation.
authors.forename: P
authors.initials: P
authors.lastname: Schuff-Werner
authors.forename: E
authors.initials: E
authors.lastname: Schütz
authors.forename: B D
authors.initials: BD
authors.lastname: Gonska
mesh_terms: D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D011517:Prothrombin Time; D012016:Reference Values; D013925:Thromboplastin / Q000592:standards
chemical_list: D006493:Heparin; D013925:Thromboplastin