1 Department of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, People's Republic of China.
2 National Clinical Research Center for Metabolic Diseases, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, People's Republic of China.
3 Institution of Metabolism and Endocrinology of Central South University, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, People's Republic of China.
4 Center of Animal Experiments, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, People's Republic of China.