@misc{indiciaecc11d37d6712,
  title = {Frontal sinus carcinoma.},
  author = {I Frew},
  year = {1969},
  doi = {10.1017/s002221510007047x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4975642/},
  note = {Source identifier: 4975642}
}