1. Department of Surgery, School of Medicine, Pusan National University, Pusan National University Yangsan Hospital, Yangsan, Gyeongsangnam 50612, P.R. China
2. Department of Surgery, Bongseng Memorial Hospital, Busan 48775, P.R. China
3. Department of Surgery, Division of Endovascular and Vascular Surgery, School of Medicine, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Gyeongsangnam 50612, Republic of Korea