@misc{indiciae6be22926dd7e,
  title = {Multiple purpose head holder.},
  author = {J Spira and P Plazeski},
  year = {1969},
  doi = {10.2214/ajr.106.1.216},
  url = {https://pubmed.ncbi.nlm.nih.gov/5769306/},
  note = {Source identifier: 5769306}
}