@misc{indiciae897d8bf18c1d,
  title = {The speechless population: how large is it?},
  author = {F H Silverman and M Meagher},
  year = {1980},
  doi = {10.2466/pms.1980.51.3f.1178},
  url = {https://pubmed.ncbi.nlm.nih.gov/6452622/},
  note = {Source identifier: 6452622}
}