T. C. Russ, Stamatakis, E., Hamer, M., Starr, J. M., Kivimäki, M., and Batty, G. D.,
“Socioeconomic status as a risk factor for dementia death: individual participant meta-analysis of 86 508 men and women from the UK.”,
Br J Psychiatry, vol. 203, no. 1, pp. 10-7, 2013.