Davis, Daniel H.J., Muniz Terrera, Graciela, Keage, Hannah, Rahkonen, Terhi, Oinas, Minna, Matthews, Fiona E., Cunningham, Colm, Polvikoski, Tuomo, Sulkava, Raimo, MacLullich, Alasdair M.J., Brayne, Carol, "Delirium is a strong risk factor for dementia in the oldest-old: A population-based cohort study", Brain, 2012