@misc{indiciaec3b888800844,
  title = {Eustachian tube function and mastoid pneumatization.},
  author = {S Shimada and N Yamaguchi and Y Honda},
  year = {1990},
  doi = {10.3109/00016489009124809},
  url = {https://pubmed.ncbi.nlm.nih.gov/2239248/},
  note = {Source identifier: 2239248}
}