Jun-Jian Tang1, Qing-You Meng2, Zhi-Xin Cai3, Xiao-Qiang Li4. 1. Department of Vascular Surgery, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China; Department of Vascular Surgery, Taihu Hospital, Wuxi, Jiangsu, China. 2. Department of Vascular Surgery, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. 3. Department of Vascular Surgery, Taihu Hospital, Wuxi, Jiangsu, China. 4. Department of Vascular Surgery, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. Electronic address: flytsg1962@126.com.