@misc{indiciae1fc92a9bf14c,
  title = {Simple subcortical mastoidectomy.},
  author = {J A Donaldson},
  year = {1969},
  doi = {10.1001/archotol.1969.00770020914022},
  url = {https://pubmed.ncbi.nlm.nih.gov/5786299/},
  note = {Source identifier: 5786299}
}