title: The optimal intensity of vitamin K antagonists in patients with mechanical heart valves: a meta-analysis.
authors.forename: Hugh O
authors.initials: HO
authors.lastname: O'Kane
mesh_terms: D001021:Aortic Valve; D006331:Heart Diseases / Q000517:prevention & control; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D019934:International Normalized Ratio / Q000592:standards*; D008943:Mitral Valve; D013923:Thromboembolism / Q000517:prevention & control; D014812:Vitamin K / Q000037:antagonists & inhibitors*
chemical_list: D014812:Vitamin K