1. School of Public Health, LKS Faculty of Medicine, The University of Hong Kong , Hong Kong SAR, China
2. MRC Integrative Epidemiology Unit at the University of Bristol , Bristol, UK
3. Population Health Sciences, Bristol Medical School, University of Bristol , Bristol, UK
4. National Institute for Health Research Bristol Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust and University of Bristol , Bristol, UK
5. School of Public Health and Health Policy, City University of New York , New York, USA