1. Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu 610041, China
2. Department of Infection Control, Minda Hospital, Hubei Minzu University, Enshi 445000, China
3. Center for Pathogen Research, West China Hospital, Sichuan University, Chengdu 610041, China
4. Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu 610041, China