@misc{indiciaeb5bcb098f55a,
  title = {A graphic look at OR utilization.},
  author = {M Hoffman},
  year = {1975},
  doi = {10.1016/s0001-2092(07)68014-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/1041481/},
  note = {Source identifier: 1041481}
}