1. Department of Laboratorial Science and Technology & Vaccine Research Center, School of Public Health Peking University Beijing People's Republic of China
2. Global Center for Infectious Disease and Policy Research & Global Health and Infectious Diseases Group Peking University Beijing People's Republic of China
3. Key Laboratory of Cognition and Personality, Faculty of Psychology, Ministry of Education Southwest University Chongqing P.R. China
4. Department of Health Policy and Management, School of Public Health Hangzhou Normal University Hangzhou China
5. Department of Health Policy and Management, College of Public Health Zhengzhou University Zhengzhou P.R. China
6. Department of Epidemiology and Biostatistics, School of Public Health Peking University Beijing People's Republic of China