1. Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
2. Clinical Trial Service Unit & Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, United Kingdom
3. Medical Research Council Population Health Research Unit at the University of Oxford, Nuffield Department of Population Health, University of Oxford, United Kingdom
4. Chinese Academy of Medical Sciences, Beijing, China
5. National Center for Food Safety Risk Assessment, Beijing, China
6. National Institute for Health Research Oxford Biomedical Research Centre, Oxford University Hospital, Oxford, United Kingdom