1. Department of Medical Administration, West China Hospital, Sichuan University, Chengdu 610041, China
2. Department of Evidence-Based Medicine and Clinical Epidemiology, West China Clinical School of Medicine, Sichuan University, Chengdu 610041, China
3. Hospital Infection Management Department, West China Hospital, Sichuan University, Chengdu 610041, China
4. Department of Periodical Press, West China Hospital, Sichuan University, Chengdu 610041, China
5. Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, China