@misc{indiciae8829b7e758de,
  title = {[Endonasal, microscopically controlled frontal sinus surgery].},
  author = {D Simmen},
  year = {1997},
  doi = {10.1055/s-2007-997401},
  url = {https://pubmed.ncbi.nlm.nih.gov/9213400/},
  note = {Source identifier: 9213400}
}