1. Department of Digestive Surgical Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
2. Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
3. Department of Endocrine and Vascular Surgery, Taihe Hospital, Hubei Medical College, Shiyan, Hubei, P.R. China