@misc{indiciaecd2e1eb86239,
  title = {Combination therapy for exercise intolerance in COPD.},
  author = {R Casaburi},
  year = {2006},
  doi = {10.1136/thx.2006.058511},
  url = {https://pubmed.ncbi.nlm.nih.gov/16807386/},
  note = {Source identifier: 16807386}
}