@misc{indiciae34e646a8b563,
  title = {Chest physiotherapy under scrutiny.},
  author = {D A Newton},
  year = {1979},
  doi = {10.1016/s0140-6736(79)90495-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/83500/},
  note = {Source identifier: 83500}
}