@misc{indiciaeb8b90bfd6e73,
  title = {Pre-employment colour vision testing.},
  author = {A H Mounstephen},
  year = {1992},
  doi = {10.1093/occmed/42.4.217-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/1421338/},
  note = {Source identifier: 1421338}
}