Effects of the Tovertafel® on apathy, social interaction and social activity of people with dementia in long-term inpatient care: results of a non-controlled within-subject-design study - Konrad, Robert; Güttler, Carina; Öhl, Natalie; Heidl, Christian; Scholz, Stefanie; Bauer, Christian (Frontiers in Neurology, 2024)