1. Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, P. R. China
2. Shanghai Minimally Invasive Surgery Center , Shanghai, P. R. China
3. Department of General Surgery, People’s Hospital of Rui’an , Zhejiang, P. R. China
4. Section for Surgical Research, Department of Surgery, Medical University of Graz , Graz, Austria
5. Department of General Surgery, Wuxi Huishan District People’s Hospital , Jiangsu, P. R. China
6. Department of General Surgery, Zhoushan Hospital , Zhejiang, P. R. China
7. Department of General Surgery, Cixi Third People’s Hospital , Zhejiang, P. R. China
8. Department of General Surgery, People’s Hospital of Wenzhou , Zhejiang, P. R. China
9. Department of General Surgery, Chinese PLA 107 Hospital , Shandong, P. R. China
10. Department of General Surgery, Rudong People’s Hospital , Jiangsu, P. R. China
11. Department of General Surgery, Kunshan Hospital of Chinese Medicine , Jiangsu, P. R. China
12. Department of General Surgery, Jingjiang Chinese Medicine Hospital , Jiangsu, P. R. China
13. Department of General Surgery, Haiyan People’s Hospital , Zhejiang, P. R. China
14. Department of General Surgery, Yueqing People’s Hospital , Zhejiang, P. R. China
15. Department of Medical Affairs, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, P. R. China