1. Emergency Medicine Concepts and Clinical Practice;Rosen,1998
2. Harrison’s Principles of Internal Medicine;Fauci,1998
3. The Washington Manual of Medical Therapeutics;Carey,1998
4. A comparison of real-time compression ultrasonography with impedance plethysmography for the diagnosis of deep-vein thrombosis in symptomatic outpatients;Heijboer;N Engl J Med,1993