@misc{indiciae9d23a99e46c4,
  title = {Morbidity during hospitalization: can we predict it?},
  author = {M E Charlson and F L Sax and C R MacKenzie and R L Braham and S D Fields and R G Douglas},
  year = {1987},
  doi = {10.1016/0021-9681(87)90107-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3110198/},
  note = {Source identifier: 3110198}
}