@misc{indiciae1ba5d1ed1355,
  title = {Middle ear effusions. Current concepts.},
  author = {D E Greydanus and E J O'Connell and T J McDonald},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/881901/},
  note = {Source identifier: 881901}
}