@misc{indiciae207be1e949f0,
  title = {Predicting difficulty--clinical indices and their statistical equivalents.},
  author = {N Jayousi and P Charters},
  year = {1997},
  doi = {10.1093/bja/78.3.338},
  url = {https://pubmed.ncbi.nlm.nih.gov/9135322/},
  note = {Source identifier: 9135322}
}