1. State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases, and Xijing Hospital of Digestive Diseases, Air Force Military Medical University, Xi’an, China
2. Department of Otolaryngology, Xijing Hospital, Air Force Military Medical University, Xi’an, China
3. The First Brigade of Student, Air Force Military Medical University, Xi’an, China
4. Department of Digestive Surgery, Xijing Hospital, Air Force Military Medical University, Xi’an, China