@misc{indiciae4e4e60fd2e92,
  title = {Primary lung cancer.},
  author = {P Graham},
  year = {1990},
  doi = {10.5694/j.1326-5377.1990.tb136920.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2168014/},
  note = {Source identifier: 2168014}
}