@misc{indiciaeb78bbc5fea0a,
  title = {Clearing obstructed drainage tubes.},
  author = {J M Miller},
  year = {1987},
  doi = {10.1378/chest.91.5.794c},
  url = {https://pubmed.ncbi.nlm.nih.gov/3568792/},
  note = {Source identifier: 3568792}
}