1. Department of Hepatopancreatobiliary Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
2. Department of Gastrointestinal Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China
3. Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province, China