van der Linde, R. M., Dening, T., Stephan, B. C., Prina, A. M., Evans, E. H., & Brayne, C. (2016). Longitudinal course of behavioural and psychological symptoms of dementia: systematic review. British Journal of Psychiatry, 209(5), https://doi.org/10.1192/bjp.bp.114.148403