1. State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Air Force Military Medical University, Xi’an, 710032, Shaanxi, China
2. Department of Radiation Oncology, Xijing Hospital, Air Force Military Medical University, Xi’an, 710032, Shaanxi, China
3. Department of Gastroenterology, The Air Force Hospital From Eastern Theater of PLA, Nanjing, 210002, Jiangsu, China