1. Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu, China
2. Transplantation Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
3. Employee Healthcare Department, West China Hospital of Sichuan University, Chengdu, China
4. Department of Infectious Diseases, Hunan Provincial Corps Hospital, Chinese People’s Armed Police Forces, Hunan, China