@misc{indiciaeb86583688614,
  title = {First fifty years.},
  author = {T E Christy},
  year = {1971},
  doi = {10.1097/00000446-197109000-00041},
  url = {https://pubmed.ncbi.nlm.nih.gov/4933985/},
  note = {Source identifier: 4933985}
}