Peking University - Department of Epidemiology and Biostatistics, Agency for Science, Technology and Research (A*STAR) - Genome Institute of Singapore, Peking University - Department of Epidemiology and Biostatistics, Peking University Health Science Center - School of Public Health, Peking University Health Science Center - School of Public Health, Chinese Academy of Medical Sciences, Chinese Academy of Medical Sciences, University of Oxford, University of Oxford - Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), University of Oxford - Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), University of Oxford - Medical Research Council Population Health Research Unit (MRC PHRU), University of Pittsburgh, Huixian People's Hospital, Chinese Center for Disease Control and Prevention (China CDC), China National Center for Food Safety Risk Assessment, University of Oxford - Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Duke University - Health Services and Systems Research, Peking University - Department of Epidemiology and Biostatistics, Chinese Academy of Medical Sciences and Independent