@misc{indiciae25f303c5b6ce,
  title = {Choosing the appropriate control.},
  author = {P E Morris and E A Fitzpatrick},
  year = {1999},
  doi = {10.1378/chest.115.4.1214-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/10208237/},
  note = {Source identifier: 10208237}
}