1. School of Public Health, Evidence Based Social Science Research Center/Health Technology Assessment Center Lanzhou University Lanzhou China
2. Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province Lanzhou University Lanzhou China
3. School of Basic Medical Sciences, Evidence Based Medicine Center Lanzhou University Lanzhou China
4. The First Clinical Medical College Lanzhou University Lanzhou China
5. Law School Lanzhou University Lanzhou China