1. Department of Gastroenterology, Jingjiang People’s Hospital, Jingjiang, Jiangsu, P. R. China
2. Department of General Surgery, Jingjiang People’s Hospital, Jingjiang, Jiangsu, P. R. China
3. Department of Pathology, Jingjiang People’s Hospital, Jingjiang, Jiangsu, P. R. China
4. Department of Central Laboratory, Jingjiang People’s Hospital, Jingjiang, Jiangsu, P. R. China