Challenging behavior of nursing home residents during COVID-19 measures Personality assessment in nursing home residents with mental and physical multimorbidity: two informant perspectives The development of the PET@home toolkit: An experience-based co-design method study A bayesian network meta-analysis to explore modifying factors in randomized controlled trials: what works for whom to reduce depression in nursing home residents? Developing a research agenda on NATure-based and Animal-assisted Intervention Strategies (NATAIS) in people with neurodegenerative diseases with a specific focus on social isolation and loneliness: a group concept mapping procedure