@misc{indiciae224b2e9fdeb3,
  title = {Life expectancy in severe COPD.},
  author = {C B Cooper},
  year = {1994},
  doi = {10.1378/chest.105.2.335},
  url = {https://pubmed.ncbi.nlm.nih.gov/8306723/},
  note = {Source identifier: 8306723}
}