1. School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
2. BC Centre for Disease Control, Vancouver, BC V5Z 4R4, Canada
3. Department of Public Health, University of Turku, 20014 Turku, Finland
4. Research Services, Turku University Hospital, 20520 Turku, Finland
5. BC Children’s Hospital Research Institute, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
6. Department of Mathematics, University of British Columbia, Vancouver, BC V6T 1Z2, Canada
7. Faculty of Science and Engineering, Åbo Akademi University, 20500 Turku, Finland
8. Department of Public Health, University of Helsinki, 00014 Helsinki, Finland
9. Sauder School of Business, University of British Columbia, Vancouver, BC V6T 1Z2, Canada
10. Institute of Clinical Medicine (Psychiatry), University of Eastern Finland, 70029 Kuopio, Finland
11. School of Health Sciences, University of Skövde, 54128 Skövde, Sweden