1. Clinical School of Medicine, Nanjing University, Nanjing, P.R. China.
2. Institute of Basic Medical Science & School of Basic Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, P.R. China, Center of Excellence in Tissue Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, P.R. China.
3. Department of General Surgery, Jingling Hospital, Clinical School of Nanjing University, Nanjing, P.R. China.
4. State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing. P.R. China.