@misc{indiciaecb8a260a515c,
  title = {Letter: Understanding blindness.},
  author = {W J Dinning},
  year = {1974},
  doi = {10.1136/bmj.4.5938.231-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/4420120/},
  note = {Source identifier: 4420120}
}