@misc{indiciae083c07f1f043,
  title = {Miniature peak-flow meters.},
  author = {B J Freedman},
  year = {1979},
  doi = {10.1136/bmj.1.6158.268-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/154357/},
  note = {Source identifier: 154357}
}