1. Centre for Disease Modelling, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada.
2. College of Mathematics and System Science, Xinjiang University, Urumqi, China.
3. Public Health Risk Sciences Division, Public Health Agency of Canada, Canada.
4. Toronto Health Economics and Technology Assessment Collaborative, University Health Network, Toronto, Canada.
5. School of Mathematics and Statistics, Xidian University, Xi’an, China.
6. Department of Mathematics, Shanghai Normal University, Shanghai, China.
7. Département de Mathématiques et de Statistique, Université de Montréal, Montréal, Canada.
8. Complex System Research Center, Shanxi University, Taiyuan, China.
9. School of Public Health and Management, Hubei University of Medicine, Shiyan, China.
10. School of Mathematics and Statistics, Northeast Normal University, Changchun, China.
11. Department of Mathematics, Beijing University of Civil Engineering and Architecture, Beijing, China.