@misc{indiciaeb581500fbe3f,
  title = {Anesthesia for Zenker's diverticulum.},
  author = {R Cope and P Spargo},
  year = {1990},
  doi = {10.1213/00000539-199009000-00027},
  url = {https://pubmed.ncbi.nlm.nih.gov/2118314/},
  note = {Source identifier: 2118314}
}