1. Evidence Based Social Science Research Center School of Public Health Lanzhou University Lanzhou China
2. Health Technology Assessment Center of Lanzhou University School of Public Health Lanzhou University Lanzhou China
3. Evidence‐Based Medicine Center School of Basic Medical Sciences Lanzhou University Lanzhou China
4. Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province Lanzhou China
5. Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu China
6. Wuwei People's Hospital Wuwei China