Keeping clots from mechanical heart valves.
D000925:Anticoagulants / Q000008:administration & dosage*; D001021:Aortic Valve; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D019934:International Normalized Ratio; D008943:Mitral Valve; D013927:Thrombosis / Q000517:prevention & control*; D014859:Warfarin / Q000008:administration & dosage*
D000925:Anticoagulants; D014859:Warfarin