@misc{indiciae4851bb2fc781,
  title = {Exercise training in chronic bronchitis.},
  author = {D J Sinclair and C G Ingram},
  year = {1980},
  doi = {10.1136/bmj.280.6225.1229},
  url = {https://pubmed.ncbi.nlm.nih.gov/7388482/},
  note = {Source identifier: 7388482}
}