@article{bohnen2013-24078735,
  author  = {Bohnen, N. I. and Frey, K. A. and Studenski, S. and Kotagal, V. and Koeppe, R. A. and Scott, P. J. and Albin, R. L. and Müller, M. L.},
  title   = {{Gait speed in Parkinson disease correlates with cholinergic degeneration}},
  journal = {Neurology},
  year    = {2013},
  doi     = {10.1212/wnl.0b013e3182a9f558},
  pmid    = {24078735},
  url     = {https://doi.org/10.1212/wnl.0b013e3182a9f558}
}