@misc{indiciae609181a149df,
  title = {A lung function information system.},
  author = {A F Verbraak and E Hoorn and J de Vries and J M Bogaard and A Versprille},
  year = {1991},
  doi = {10.1016/0141-5425(91)90040-e},
  url = {https://pubmed.ncbi.nlm.nih.gov/2002668/},
  note = {Source identifier: 2002668}
}