@misc{indiciaec31f0a2bf549,
  title = {Spatial cognition in Parkinson disease.},
  author = {B E Levin},
  year = {1990},
  doi = {10.1097/00002093-199040300-00004},
  url = {https://pubmed.ncbi.nlm.nih.gov/2223021/},
  note = {Source identifier: 2223021}
}