Engstad, T., Engstad, T.T., Viitanen, M. and Ellekjær, H. 2012. Epidemiology of stroke in the elderly in the Nordic countries. Incidence, survival, prevalence and risk factors. Norsk Epidemiologi. 22, 2 (Nov. 2012). DOI:https://doi.org/10.5324/nje.v22i2.1557.