1. Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
2. Center for the Study of Inflammatory Bowel Disease, GI Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
3. Department of Surgery, Jinling Hospital, Nursing College, Nanjing University of Chinese Medicine, Nanjing 210002, China
4. Department of Surgery, Limb Preservation and Wound Care Research, VA New England Health Care Division, Providence, RI 02908, USA
5. Department of Pathology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
6. Department of General Surgery, Second Affiliated Hospital of Jilin University, General Surgery Center of Jilin University, Changchun 130000, China