1. Faculty of Health and Community Studies, School of Social Work, MacEwan University , Edmonton, Alberta , Canada
2. Department of Gerontology, Gerontology Research Centre, Simon Fraser University , Vancouver, British Columbia , Canada
3. School of Social Welfare, Chung-Ang University , Seoul , Korea
4. Faculty of Social Work, University of Calgary , Calgary, Alberta , Canada
5. Department of Gerontology and Department of Sociology/Anthropology, Simon Fraser University , Burnaby, British Columbia , Canada