@misc{indiciae506baed82a3a,
  title = {A mechanical three-step test.},
  author = {E M Perlman},
  year = {1984},
  doi = {10.1001/archopht.1984.01040031396035},
  url = {https://pubmed.ncbi.nlm.nih.gov/6497755/},
  note = {Source identifier: 6497755}
}