1. Diabetes Center; Department of Endocrinology; The 306th Hospital of PLA; Beijing China
2. Department of Endocrine and Metabolism; Peking University People's Hospital; Beijing China
3. Department of Endocrinology; Beijing Hospital; Beijing China
4. Department of Endocrinology; Gansu Provincial Hospital; Lanzhou China
5. Department of Endocrinology; Heilongjiang Provincial Hospital; Harbin China
6. Department of Endocrinology; First Affiliated Hospital of Kumming Medical University; Kunming China
7. Department of Endocrinology; Nanjing Drum Tower Hospital; The Affiliated Hospital of Nanjing University Medical School; Nanjing China
8. Department of Endocrinology; Shanghai Jiao Tong University; Affiliated Sixth People's Hospital; Shanghai China
9. Department of Endocrinology and Metabolism; West China Hospital; Sichuan University; Chengdu China
10. Key Laboratory of Hormones and Development (Ministry of Health); Tianjin Key Laboratory of Metabolic Diseases Hospital; Tianjin Medical University; Tianjin China
11. Department of Endocrinology; The Central Hospital of Wuhan Tongji Medical College; Huazhong University of Science & Technology; Wuhan China
12. Department of Endocrinology; The First Affiliated Hospital of Xi'an; Jiao Tong University; Xi'an China
13. Department of Endocrinology; First Affiliated Hospital of Xinjiang Medical University; Urumqi China
14. The First Affiliated Hospital of China Medical University; Shenyang China
15. Department of Endocrinology and Metabolism; The Second Xiangya Hospital of Central South University; Changsha China
16. Department of Endocrinology and Metabolism; The Third Affiliated Hospital Sun Yat-Sen University; Guangzhou China