@article{ries2009-19389792,
  author  = {Ries, J. D. and Echternach, J. L. and Nof, L. and Gagnon Blodgett, M.},
  title   = {{Test-retest reliability and minimal detectable change scores for the timed "up \& go" test, the six-minute walk test, and gait speed in people with Alzheimer disease}},
  journal = {Physical therapy},
  year    = {2009},
  doi     = {10.2522/ptj.20080258},
  pmid    = {19389792},
  url     = {https://doi.org/10.2522/ptj.20080258}
}