1. Department of Psychology, University of Calgary, Calgary, Alberta, Canada;
2. Alberta Children's Hospital Research Institute, Calgary, Alberta, Canada;
3. School of Psychology, Université de Moncton, Moncton, New Brunswick, Canada;
4. Centre de Formation médicale du Nouveau-Brunswick, Université de Sherbrooke, Sherbrooke, New Brunswick, Canada;
5. Faculté Saint-Jean, University of Alberta, Edmonton, Alberta, Canada;
6. Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada;
7. Alberta Children's Hospital, Neurosciences Program, Calgary, Alberta, Canada;
8. Departments of Pediatrics and Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada;
9. Department of Educational Psychology, University of Alberta, Edmonton, Alberta, Canada;
10. Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada;
11. Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada;
12. Glen Sather Sports Medicine Clinic, Department of Family Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada;
13. Department of Pediatrics, Faculty of Medicine, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada;
14. Departments of Pediatrics and Community Health Sciences, Cumming School of Medicine, O'Brien Institute for Public Health, University of Calgary, Calgary, Alberta, Canada;
15. Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; and
16. Sport Medicine Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.