@misc{indiciaec2be900c553b,
  title = {Coalmining, emphysema and compensation.},
  author = {J B Gee and W K Morgan},
  year = {1991},
  doi = {10.1136/oem.48.1.70},
  url = {https://pubmed.ncbi.nlm.nih.gov/1825175/},
  note = {Source identifier: 1825175}
}