1. Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
2. Editor-in-Chief Office, Chinese Medical Association Publishing House, Beijing 100052, China
3. Editorial Department, British Medical Journal (Chinese Edition), Chinese Medical Association Publishing House, Beijing 100052, China
4. National Clinical Research Center for Infectious Disease, the Third People’s Hospital of Shenzhen, Shenzhen 518112, China
5. Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, China