@misc{indiciaeb63277e39e86,
  title = {Letter: A coding system for nuclear medicine using unit record equipment.},
  author = {F J Pircher and P H Cooper and S R Lerner and J P Pittman},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4813237/},
  note = {Source identifier: 4813237}
}