@misc{indiciae67758fb148a5,
  title = {Doppler evaluation.},
  author = {J Faber},
  year = {1990},
  doi = {10.1378/chest.97.3.765-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/2306987/},
  note = {Source identifier: 2306987}
}