@misc{indiciae299cbe9b78a9,
  title = {Radiological irregular opacities and coalwork exposure: a case-referent study.},
  author = {A Cockcroft and N Andersson},
  year = {1987},
  doi = {10.1136/oem.44.7.484},
  url = {https://pubmed.ncbi.nlm.nih.gov/3620373/},
  note = {Source identifier: 3620373}
}