1. Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China.
2. Division of Epidemiology, HEALTHQUAL, Institute for Global Health Sciences, University of California, San Francisco, California, USA.
3. Department of Epidemiology, School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, P.R. China.
4. Kirby Institute, University of New South Wales, Sydney, Australia.
5. Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden.
6. Centre for Clinical Research, Epidemiology, Modelling and Evaluation, Institute for Global Health, University College London, London, United Kingdom.