@misc{indiciaea72658088323,
  title = {The voice: a teaching tool.},
  author = {J M Jeffers and G D Underwood},
  doi = {10.1097/00006223-199311000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/8265001/},
  note = {Source identifier: 8265001}
}