@misc{indiciae3a45d6ed6723,
  title = {Central lymph node changes and progressive massive fibrosis in coalworkers.},
  author = {J Leigh and A N Wiles},
  year = {1987},
  doi = {10.1136/thx.42.7.559},
  url = {https://pubmed.ncbi.nlm.nih.gov/3438903/},
  note = {Source identifier: 3438903}
}