1. Department of Vascular Surgery, 2nd Affiliated Hospital of Shanxi Medical University , Taiyuan, Shanxi , China
2. Department of Vascular Surgery, Zhongshan Hospital, Fudan University , Shanghai , China
3. Division of Vascular and Endovascular Surgery, Department of Surgery, University of Washington School of Medicine , 1959 NE Pacific Street, Box 356410, Seattle, WA 98195 , USA