@misc{indiciae3a9cd491a0b0,
  title = {Portable telephone amplifier.},
  author = {M N HOSMER},
  year = {1956},
  doi = {10.1001/jama.1956.02960390035010},
  url = {https://pubmed.ncbi.nlm.nih.gov/13278191/},
  note = {Source identifier: 13278191}
}