1. Department of Sociology and Anthropology, Carleton University, Ottawa, Ontario, Canada
2. Department of Psychology, Wilfrid Laurier University, Waterloo, Ontario, Canada
3. Research Department, IWK Health Centre, Halifax, Nova Scotia, Canada
4. School of Public Health and Social Policy, University of Victoria, Victoria, British Columbia
5. Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada
6. Institute for Sexual and Gender Health, University of Minnesota, Minneapolis, Minnesota, USA
7. Department of Epidemiology and Biostatistics, Dornsife School of Public Health, Drexel University, Phildelphia, Pennsylvania, USA