1. Department of Sociology, Anthropology, and Public Health, University of Maryland Baltimore County, Baltimore, Maryland, USA.
2. National Institute of Public Health, University of Southern Denmark, Odense, Denmark.
3. Department of Geriatrics and Palliative Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
4. College of Nursing, University of Utah, Salt Lake City, Utah, USA.