1. West China School of Nursing/West China Hospital; Sichuan University; Chengdu China
2. School of Public Health, Evidence-Based Social Science Research Center; Lanzhou University; Lanzhou China
3. Evidence-Based Medicine Center, School of Basic Medical Sciences; Lanzhou University; Lanzhou China
4. Department of Health Research Methodology, Evidence and Impact; McMaster University; Hamilton Canada
5. Department of Epidemiology and Health Statistics; West China School of Public Health and West China Fourth Hospital, Sichuan University; Chengdu China
6. The Michael G. DeGroote Institute for Pain Research and Care; McMaster University; Hamilton Canada
7. Department of Rheumatology; Tung Wah Group of Hospitals; Hong Kong China
8. The Second Clinical Medical College; Lanzhou University; Lanzhou China
9. School of Public Health, Evidence-Based Social Science Research Center; Lanzhou University; Lanzhou City China
10. Evidence-Based Medicine Center, School of Basic Medical Sciences; Lanzhou University; Lanzhou China
11. Lanzhou University Institute of Health Data Science; Lanzhou University; Lanzhou China
12. West China School of Nursing /West China Hospital; Sichuan University; Chengdu China