@misc{indiciaef769fad07a92,
  title = {Measuring productivity through patient classification.},
  author = {S E Grant and A C Bellinger and B L Sweda},
  year = {1982},
  doi = {10.1097/00006216-198200630-00011},
  url = {https://pubmed.ncbi.nlm.nih.gov/6918826/},
  note = {Source identifier: 6918826}
}