1. Department of Gastrointestinal Surgery, The Affiliated Huai’an Hospital of Xuzhou Medical University and The Second People’s Hospital of Huai’an, Huai’an 223300, Jiangsu, China
2. Department of General Surgery, Lianshui People’s Hospital Affiliated to Kangda College of Nanjing Medical University, Huai’an 223300, Jiangsu, China
3. Department of Radiotherapy, The Affiliated Huai’an Hospital of Xuzhou Medical University and The Second People’s Hospital of Huai’an, Huai’an 223300, Jiangsu, China
4. Department of General Surgery, The Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical University, Huai’an 223300, Jiangsu, China
5. Department of Rehabilitation, Geriatric Hospital of Nanjing Medical University, Jiangsu Province Official Hospital, Nanjing 210000, Jiangsu, China