1. The Research Center of Stem Cell; Tissue and Organ Engineering; Kunming General Hospital of PLA; Kunming China
2. Department of Hepatobiliary Surgery; The First People's Hospital of Liangshan Prefecture; Sichuan China
3. Department of Gastroenterology; the 105th hospital of Nanjing Military Command; Hefei Anhui Province China
4. Department of Urinary Surgery; Kunming General Hospital of PLA; Yunnan China