@misc{indiciae33891b512cdf,
  title = {Grading DRGs.},
  author = {S E Berki},
  year = {1984},
  doi = {10.1097/00005650-198412000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/6439953/},
  note = {Source identifier: 6439953}
}