@misc{indiciae8739ddd77d9a,
  title = {[Intrapulmonary percussion--a secretolytic treatment method].},
  author = {M Rösel and D Kirsten and G Liebetrau},
  year = {1987},
  url = {https://pubmed.ncbi.nlm.nih.gov/3673121/},
  note = {Source identifier: 3673121}
}