1. 400 - Environmental stimuli in nursing homes during the COVID-19 pandemic: Lessons learned to improve the management of challenging behavior. (October 2021) Authors: Knippenberg, Inge; Leontjevas, Ruslan; Nijsten, Johanna; Bakker, Christian; Koopmans, Raymond; Gerritsen, Debby Journal: International psychogeriatrics Issue: Volume 33(2021)Supplement 1 Page Start: 27 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗