1. Gansu Provincial Hospital, Lanzhou, China
2. Evidence-Based Social Science Research Center, School of Public Health, Lanzhou University, Lanzhou, China
3. Evidence-Based Nursing Center, School of Nursing, Lanzhou University, Lanzhou, China
4. The Second Physical Examination Center of The First Hospital, Lanzhou University, Lanzhou, China
5. The First People's Hospital of Lanzhou City, Lanzhou, China
6. Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
7. Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China