1. From the: Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada;
2. Supportive Care Services, Cancer Care Alberta, Alberta Health Services, Edmonton, Alberta, Canada;
3. Faculty of Kinesiology, Sport, and Recreation, College of Health Sciences, University of Alberta, Edmonton, Alberta, Canada;
4. Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada;
5. Faculty of Health Disciplines, Athabasca University, Athabasca, Alberta, Canada;
6. Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada;
7. Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada;
8. Division of Cancer Epidemiology and Genetics, US National Cancer Institute, Rockville, Maryland, USA.