@misc{indiciaec0f4e2436366,
  title = {[Quality control of spirometry].},
  author = {H Matthys},
  year = {2004},
  doi = {10.1055/s-2003-812460},
  url = {https://pubmed.ncbi.nlm.nih.gov/15007782/},
  note = {Source identifier: 15007782}
}