1. Department of Gerontology, University of Massachusetts Boston, Boston, USA
2. Osher Lifelong Learning Institute, University of Massachusetts Boston, Boston, USA
3. Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana-Champaign, USA
4. Connected Health Innovation, Mass General Brigham, Boston, USA
5. The LGBT Aging Project, Fenway Institute, Boston, USA