@misc{indiciae71fa4faafed7,
  title = {Early bone conduction hearing aid devices.},
  author = {K W Berger},
  year = {1976},
  doi = {10.1001/archotol.1976.00780100101017},
  url = {https://pubmed.ncbi.nlm.nih.gov/773357/},
  note = {Source identifier: 773357}
}