1 Department of Cancer Epidemiology and Prevention Research, CancerControl Alberta, Alberta Health Services, Holy Cross Centre, Calgary, AB, Canada.
2 Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB, Canada.
3 Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
4 Department of Mathematics and Statistics, University of Calgary, Calgary, AB, Canada.
5 Population, Public & Indigenous Health, Alberta Health Services, Calgary, AB, Canada.
6 Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
7 Department of Cancer Epidemiology and Prevention Research, CancerControl Alberta, Alberta Health Services, Holy Cross Centre, Calgary, AB, Canada. christine.friedenreich@albertahealthservices.ca.
8 Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. christine.friedenreich@albertahealthservices.ca.
9 Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. christine.friedenreich@albertahealthservices.ca.