@article{Folstein1975,
author = {Folstein, M.F. and Folstein, S.E. and McHugh, P.R.},
title= {Mini-mental state: A practical method for grading the cognitive state of patients for the clinician},
year = {1975},
doi = {10.1016/0022-3956(75)90026-6},
journal = {Journal of Psychiatric Research},
volume = {12},
number = {3},
pages = {189--198},
}