1. Colorectal Cancer Center, Department of Gastrointestinal Surgery Shanghai Tenth People's Hospital Affiliated to Tongji University Shanghai China
2. Cancer Center of the First Hospital of Jilin University Changchun China
3. Department of Gastrointestinal Surgery, Institute of Gastroenterology The First Affiliated Hospital of Kunming Medical University Kunming China
4. Department of Nutrition, Daping Hospital & Research Institute of Surgery Third Military Medical University Chongqing China
5. Department of Epidemiology and Statistics, College of Public Health Zhengzhou University Zhengzhou China
6. Department of Medical Oncology, Fujian Cancer Hospital Fujian Medical University Cancer Hospital Fuzhou China
7. Departments of Gastrointestinal Surgery and Department of Clinical Nutrition, Beijing Shijitan Hospital Capital Medical University Beijing China