1. The Diabetic Center of PLA, The 306th Hospital of Chinese PLA, Beijing, China
2. Huaxi Hospital of Sichuan University, Chengdu, China
3. The Third Hospital of Hebei Medical University, Shijiazhuang, China
4. Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, China
5. Metabolic Diseases Hospital, Tianjin Medical University, Tianjin, China
6. Nanjing Medical University Affiliated Nanjing Hospital, Nanjing, China
7. Southwest Hospital, Third Military Medical University, Chongqing, China
8. Mudanjiang Diabetes Hospital, Mudanjiang, China
9. East Hospital Affiliated to School of Medicine, Tongji University, Shanghai, China
10. The Second Affiliated Hospital of Harbin Medical University, Harbin, China
11. Zhongda Hospital, Southeast University, Nanjing, China
12. The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
13. The Affiliated Hospital of Inner Mongolia Medical College, Hohhot, China
14. Heilongjiang Provincial Hospital, Harbin, China
15. Shanghai Sixth People Hospital, Shanghai, China