@misc{indiciae5be5ecb0f1d6,
  title = {Simple distance-measuring and centering device for x-ray therapy machine.},
  author = {W SNYDER},
  year = {1954},
  doi = {10.1001/archderm.1954.01540150120016},
  url = {https://pubmed.ncbi.nlm.nih.gov/13137613/},
  note = {Source identifier: 13137613}
}