1. 1Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, PR China
2. 2Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu, PR China
3. 3Center for Pathogen Research, West China Hospital, Sichuan University, Chengdu, PR China
4. 4Department of Infection Control, West China Hospital, Sichuan University, Chengdu, PR China
5. 5Laboratory of Clinical Microbiology, Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, PR China