1. Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou Jiangsu China
2. Department of General Surgery Yancheng Third People's Hospital Yancheng Jiangsu China
3. Department of General Surgery The Second Affiliated Hospital of Soochow University Suzhou Jiangsu China
4. Department of Gastrointestinal Surgery Changshu No. 2 Hospital Suzhou Jiangsu China