1. School of Social Work, University of South Florida, Tampa, Florida, USA
2. Edward R. Roybal Institute on Aging, Suzanne Dworak-Peck School of Social Work, University of Southern California, Los Angeles, California, USA
3. Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
4. Department of Social Welfare, Ewha Womans University, Seoul, South Korea