1. Cell Therapy Center, Jinan Central Hospital, Jinan, P.R. China.
2. Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, P.R. China.
3. Shandong Research Center of Transplantation and Tissue, Jinan, P.R. China.
4. Department of Gastrointestinal Surgery, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, P.R. China.