@misc{indiciaeb17ab6d0f554,
  title = {Flapper valve malfunction.},
  author = {S Khalil},
  year = {1988},
  doi = {10.1213/00000539-198812000-00018},
  url = {https://pubmed.ncbi.nlm.nih.gov/3195737/},
  note = {Source identifier: 3195737}
}