1. Department of Health Policy and Management, Graduate School of Public Health, Center for Bioethics and Health Law, University of Pittsburgh, Pittsburgh, PA, USA
2. Department of Health and Community Systems, School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA
3. Department of Information Management, National Sun Yat-sen University, Kaohsing, Taiwan
4. Department of Gerontology, McCormack Graduate School of Policy and Global Studies, University of Massachusetts, Boston, MA, USA