1 .兰锡纯,冯卓英.心脏血管外科学.北京:人民卫生出版社,2002 .Five-year outcome study of deep vein thrombosis in the lower limbs .Venous valvular reflux in veins not involved at the time of acute deep vein thrombosis .The clinical course of deep-vein thrombosis .Prospective 12-yea ......