@misc{indiciae1e9ba613c22b,
  title = {Measuring crackles.},
  author = {J Hoevers and R G Loudon},
  year = {1990},
  doi = {10.1378/chest.98.5.1240},
  url = {https://pubmed.ncbi.nlm.nih.gov/2225972/},
  note = {Source identifier: 2225972}
}