1. Department of Emergency Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
2. Department of Family Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
3. College of Physicians & Surgeons of Alberta, Edmonton, Alberta, Canada
4. Division of Preventive Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
5. School of Public Health, University of Alberta, Edmonton, Alberta, Canada
6. Department of Educational Psychology, University of Alberta, Edmonton, Alberta, Canada
7. Alberta Health Services, Edmonton, Alberta, Canada