@misc{indiciaef9c8e8b09a77,
  title = {Peak flow meters and spirometers in general practice.},
  year = {1997},
  doi = {10.1136/dtb.1997.35752},
  url = {https://pubmed.ncbi.nlm.nih.gov/9282425/},
  note = {Source identifier: 9282425}
}