1. Peking University People's Hospital, Beijing, China.
2. The George Institute for Global Health at Peking University Health Science Center, Beijing, China.
3. The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
4. Chinese PLA General Hospital, Beijing, China.
5. Shanghai 6th Hospital, Shanghai, China.
6. China-Japan Friendship Hospital, Beijing, China.
7. The Second Military Medical University, Shanghai, China.
8. Xiangya Second Hospital, Changsha, Hunan, China.
9. Beijing 301 Military General Hospital, Beijing, China.
10. Barbara Davis Center for Diabetes, University of Colorado Denver, Aurora, Colorado.