@misc{indiciae209494d39f42,
  title = {Spirometry in chronic obstructive pulmonary disease.},
  author = {Patrick J P Poels and Tjard R J Schermer and Chris van Weel and Peter M A Calverley},
  year = {2006},
  doi = {10.1136/bmj.38987.478727.80},
  url = {https://pubmed.ncbi.nlm.nih.gov/17068018/},
  note = {Source identifier: 17068018}
}