@misc{indiciae32c5e29fa9a0,
  title = {Which exercise test should be used for patients with symptomatic COPD?},
  author = {James E Johnson},
  year = {2004},
  doi = {10.1378/chest.126.3.668},
  url = {https://pubmed.ncbi.nlm.nih.gov/15364738/},
  note = {Source identifier: 15364738}
}