@misc{indiciaecc76e5775c49,
  title = {A critical study of visual screening.},
  author = {V RYAN},
  year = {1956},
  doi = {10.1097/00006324-195605000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/13313686/},
  note = {Source identifier: 13313686}
}