1. Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada;
2. Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada;
3. Departments of Paediatrics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada;
4. Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada;
5. O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada;