@article{folstein1975,
  title={“Mini-mental state”},
  author={Marshal F. Folstein and Susan E. Folstein and Paul R. McHugh},
  year={1975},
  journal={Journal of Psychiatric Research},
  doi={10.1016/0022-3956(75)90026-6},
  url={https://doi.org/10.1016/0022-3956(75)90026-6}
}