1. Evidence Based Social Science Research Center School of Public Health Lanzhou University Lanzhou China
2. Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province Lanzhou China
3. Evidence Based Medicine Center School of Basic Medical Sciences Lanzhou University Lanzhou China
4. Research Institute for Evidence Based Rehabilitation Medicine of Gansu Province Lanzhou China
5. Gansu Province Hospital Rehabilitation Center Lanzhou China
6. Institution of Clinical Research and Evidence Based Medicine The Gansu Provincial Hospital Lanzhou China