9Hirsh J,Dalen JE, Deykin D, et al. Oral Anticoagalants: Mechanism of action, clinical effectiveness, and optimal therapeutic range. Chest, 1992,102 (4 Suppl): 312.
10Stein PD, Alpert JS, Bussey HI, et al. Antithrombotic therapy in patients with mechanical and biological prosthetic heart valves.Chest, 2001,119:220.