1. The Second Clinical Medical College of Lanzhou University; Lanzhou 730000 China
2. The First Clinical Medical College of Lanzhou University; Lanzhou 730000 China
3. School of Public Health; Lanzhou University; Lanzhou 730000 China
4. Evidence-Based Medicine Center/Chinese GRADE Center/School of Basic Medical Sciences; Lanzhou University; Lanzhou Gansu 730000 China
5. Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province; Lanzhou 730000 China
6. Acupuncture and Tuina College; Shanghai University of Traditional Chinese Medicine; Shanghai 201203 China
7. Yueyang Hospital of Integrated Traditional Chinese and Western Medicine; Shanghai University of TCM; Shanghai 201203 China
8. Dongzhimen Hospital; Beijing University of Chinese Medicine; Beijing 100700 China