@misc{indiciae34be430e2c7d,
  title = {Effective evaluations.},
  author = {D F Bell and D L Bell},
  year = {1979},
  doi = {10.1097/00006223-197911000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/259190/},
  note = {Source identifier: 259190}
}