@misc{indiciaef2f97de3211f,
  title = {Structural abnormalities in COPD.},
  author = {S P Benjamin and L J McCormack},
  year = {1977},
  doi = {10.1080/00325481.1977.11712249},
  url = {https://pubmed.ncbi.nlm.nih.gov/876895/},
  note = {Source identifier: 876895}
}