Palese, A., Menegazzi, G., Tullio, A., Zigotti Fuso, M., Hayter, M., & Watson, R. (2016). Functional decline in residents living in nursing homes : a systematic review of the literature. Journal of the American medical directors association, 17(8), 694-705. https://doi.org/10.1016/j.jamda.2016.04.002