Peking University, China National Center for Food Safety Risk Assessment, Zhejiang Provincial Center for Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Hubei Provincial Center for Disease Control and Prevention, Sichuan Center for Disease Control and Prevention, Fujian Center for Disease Control and Prevention, Hunan Provincial Center for Disease Control and Prevention, Beijing Research Center for Preventive Medicine - Beijing Center for Disease Prevention and Control, Chinese Center for Disease Control and Prevention (China CDC) - Jiangsu Provincial Center for Disease Control and Prevention, China National Center for Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment and Peking University