Loneliness, social inactivity and social isolation of older adults in assisted living facilities. - Rautiainen LJ; Jansson AH; Aalto UL; Kautiainen H; Laakkonen ML; Roitto HM; Strandberg TE; Cardeña AC; Coll-Planas L; Litt JS; Kolster A; Pitkälä KH (Experimental gerontology, 2026)