1. Department of General Surgery, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
2. Department of General Surgery, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
3. Department of Oncology, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China