@misc{indiciaefc3ffdf2817c,
  title = {Frequency of pathologic changes in the middle ear.},
  author = {R Rudin and J Holmquist},
  doi = {10.1177/00034894800890s306},
  url = {https://pubmed.ncbi.nlm.nih.gov/6778288/},
  note = {Source identifier: 6778288}
}