1. National Health Commission (NHC) Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
2. Henan Provincial Center for Disease Control and Prevention, Zhengzhou, China
3. Changchun Children's Hospital, Changchun, China
4. Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
5. Children's Hospital of Chongqing Medical University, Chongqing, China
6. Qingdao Center for Disease Control and Prevention, Qingdao, China
7. Department of Immunology, School of Medicine, Anhui University of Science and Technology, Huainan, China
8. Hebei Provincial Center for Disease Control and Prevention, Shijiazhuang, China