1. Department of Endocrinology, Key Laboratory of Endocrinology, Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730,China
2. State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical, Sciences and Peking Union Medical College, Beijing, China
3. Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing 100050, China