@misc{indiciae03993397e854,
  title = {A CPAP silencer.},
  author = {N W Penfold and S S Lowe},
  year = {1990},
  doi = {10.1111/j.1365-2044.1990.tb14542.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2180343/},
  note = {Source identifier: 2180343}
}