@misc{indiciae5ab8a05eaf48,
  title = {Subspecialty training and the 50\% solution.},
  author = {R B George},
  year = {1994},
  doi = {10.1378/chest.106.4.985},
  url = {https://pubmed.ncbi.nlm.nih.gov/7924537/},
  note = {Source identifier: 7924537}
}