1. School of Sport, Exercise and Rehabilitation, University of Technology Sydney, PO Box 123, Broadway, Sydney, NSW 2007, Australia
2. Institute for Healthy Living and Chronic Disease Prevention, University of British Columbia, 1147 Research Road, Kelowna, BC V1V 1V7, Canada
3. School of Nursing, University of British Columbia, 3333 University Way, Kelowna, BC V1V 1V7, Canada
4. School of Nursing, University of British Columbia, T201-2211 Wesbrook Mall, Vancouver, BC V6T 2B5, Canada
5. Department of Nursing, University of Melbourne, 61 Barry St, Melbourne, Carlton VIC 3053, Australia
6. Institute for Social Marketing and Health, University of Stirling, Queen's Ct, Stirling FK9 4LA, UK