@misc{indiciae20f9bd888115,
  title = {Positioning screen.},
  author = {R L Richard and S F Miller and R K Finley},
  doi = {10.1097/00004630-199207000-00012},
  url = {https://pubmed.ncbi.nlm.nih.gov/1429818/},
  note = {Source identifier: 1429818}
}