National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases,National Institute for Viral Disease Control and Prevention,Chinese Center for Disease Control and Prevention,Beijing 102206,China
Division of Infectious Disease,Key Laboratory of Surveillance and Early-Warning on Infectious Disease,Chinese Center for Disease Control and Prevention,Beijing 102206,China
School of Public Health,Binzhon Medical University,Yantai 264000,Shandong,China