@misc{indiciae831dfe3e46c3,
  title = {Physical training in chronic obstructive lung disease.},
  author = {D Christie},
  year = {1968},
  doi = {10.1136/bmj.2.5598.150},
  url = {https://pubmed.ncbi.nlm.nih.gov/5641976/},
  note = {Source identifier: 5641976}
}