University of Toronto - Dalla Lana School of Public Health, University of Leeds - Nuffield Centre for International Health and Development, University of Toronto - Dalla Lana School of Public Health, University of Toronto - Institute of Health Policy, Management and Evaluation, Shigatse Centre for Disease Control and Prevention, Shigatse Centre for Disease Control and Prevention, Weifang Medical University, Weifang Medical University, Jining Medical University, North Sichuan Medical College, Chinese Center for Disease Control and Prevention (China CDC), University of Leeds - Nuffield Centre for International Health and Development and Shigatse Centre for Disease Control and Prevention