Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Taina Rantanen and Johanna Eronen and Markku Kauppinen and Katja Kokko and Sini Sanaslahti and Niina Kajan and Erja Portegijs,Life-Space Mobility and Active Aging as Factors Underlying Quality of Life Among Older People Before and During COVID-19 Lockdown in Finland—A Longitudinal Study,The Journals of Gerontology: Series A,1079-5006,Oxford University Press (OUP),2020-10-30,76,3,e60-e67,https://cir.nii.ac.jp/crid/1360861711940483200,https://doi.org/10.1093/gerona/glaa274