@misc{indiciae53aad09355ec,
  title = {Chest physiotherapy.},
  author = {D S Selsby},
  year = {1989},
  doi = {10.1136/bmj.298.6673.541},
  url = {https://pubmed.ncbi.nlm.nih.gov/2495105/},
  note = {Source identifier: 2495105}
}