@misc{indiciae5199838cf7e1,
  title = {Simplified balloon expulsion test.},
  author = {D E Beck},
  year = {1992},
  doi = {10.1007/bf02050542},
  url = {https://pubmed.ncbi.nlm.nih.gov/1587180/},
  note = {Source identifier: 1587180}
}