1. Department of Family Relations and Applied Nutrition, College of Social and Applied Human Sciences, University of Guelph, Macdonald Institute Building, Guelph, ON N1G 2W1, Canada.
2. Wellington-Dufferin-Guelph Public Health, 71 Broadway, Orangeville, ON L9W 1K1, Canada.
3. Hamilton Public Health Services, Family Health Division, 2 King St. W., Dundas, ON L9H 6Z1, Canada.