1. Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
2. Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
3. Center for Pathogen Research, West China Hospital, Sichuan University, Chengdu, China
4. Institute of Microbiology and Infection, College of Medical and Dental Science, University of Birmingham, Birmingham, United Kingdom
5. Department of Infection Control, West China Hospital, Sichuan University, Chengdu, China