1. The George Institute for Global Health at Peking University Health Science Center; Beijing China
2. Peking University People's Hospital; Beijing China
3. The George Institute for Global Health; Sydney Medical School; University of Sydney; Sydney NSW Australia
4. Adelaide Institute for Sleep Health; Flinders University; Adelaide SA Australia
5. Gansu Provincial Hospital; Lanzhou China
6. Shanghai East Hospital; Tongji University School of Medicine; Shanghai China
7. Shengjing Hospital of China Medical University; Shenyang China
8. The First Affiliated Hospital of Chongqing Medical University; Chongqing China
9. The Fifth Affiliated Hospital; Sun Yat-sen University; Zhuhai China
10. Beijing Pinggu Hospital; Beijing China
11. The Third People's Hospital of Gansu Province; Lanzhou China
12. Shanghai Pudong New Area People's Hospital; Shanghai China
13. Sujiatun District Central Hospital; Shenyang China
14. Chongqing Donghua Hospital; Chongqing China
15. The Second Hospital of Zhanjiang City; Zhanjiang China
16. Beijing Hospital of Ministry of Health; Beijing China