1. Department of Endocrinology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
2. Department of Endocrinology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
3. Department of Endocrinology, Medical School of Chinese PLA, Chinese PLA General Hospital, Beijing, China
4. Department of Molecular Biology, Institute of Basic Medicine, School of Life Science, Chinese PLA General Hospital, Beijing, China