1. Department of Gastroenterological Surgery, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
2. Division of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
3. Division of General Surgery, Hangzhou First People’s Hospital Affiliated to Nanjing Medical University, Hangzhou, China
4. Department of Vascular Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China