1. Digestion Department, Kunshan First People's Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215300, P.R. China
2. No. 1 Department of General Surgery, Wuxi Second Hospital of Traditional Chinese Medicine, Wuxi, Jiangsu 214000, P.R. China
3. Centralab Department, Kunshan First People's Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215300, P.R. China
4. Pathology Department, Kunshan First People's Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215300, P.R. China
5. Department of General Surgery, Binhai County People's Hospital, Yancheng, Jiangsu 224000, P.R. China