Nanchang University, Jiangxi Academy of Sciences, Nanchang University, Jiangxi Normal University, Chinese Center for Disease Control and Prevention (China CDC) - Jiangxi Provincial Center for Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - Jiangxi Provincial Center for Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - Jiangxi Provincial Center for Disease Control and Prevention, Nanchang University and Beijing Research Center for Preventive Medicine - Beijing Center for Disease Prevention and Control