1. Department of Endocrinology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China
2. Department of Endocrinology, Xiangya Hospital, Central South University, Changsha 410008, China
3. Cancer Research Institute, Central South University, Changsha 410078, China
4. Department of Neurology, Affiliated Hospital of Guilin Medical University, Guilin 541001, China