1. Department of Endocrinology, Key Laboratory of Endocrinology, Ministry of Health, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
2. Department of Nutrition, Peking Union Medical College Hospital, Beijing, China
3. Department of Endocrinology, Fuxing Hospital, the Eighth Clinical Medical College, Capital Medical University, Beijing, China
4. 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
5. Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China