1. Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
2. Department of Data Center, Yinzhou District Center for Disease Control and Prevention, Ningbo, China
3. Department of Immunization Prevention, Hangzhou Center for Disease Control and Prevention, Hangzhou, China
4. Department of Immunization Prevention, Tongzhou District Center for Disease Control and Prevention, Beijing, China
5. Department of Registration and Clinical Research, Beijing Minhai Biotechnology Co., LTD, Beijing, China