1. Faculty of Health Disciplines Athabasca University Athabasca Alberta Canada
2. Department of Cancer Epidemiology and Prevention Research Alberta Health Services Calgary Alberta Canada
3. Departments of Oncology and Community Health Sciences Cumming School of Medicine University of Calgary Calgary Alberta Canada
4. Division of Cancer Epidemiology and Genetics US National Cancer Institute Bethesda Maryland USA
5. Faculty of Rehabilitation Medicine College of Health Sciences University of Alberta Edmonton Alberta Canada
6. Faculty of Kinesiology University of Calgary Calgary Alberta Canada
7. Faculty of Kinesiology Sport, and Recreation College of Health Sciences, University of Alberta Edmonton Alberta Canada
8. Department of Kinesiology School of Health and Human Sciences University of North Carolina at Greensboro Greensboro North Carolina USA