@misc{indiciae1783df8c1397,
  title = {Percutaneous tracheotomy.},
  author = {C H SHELDEN and R H PUDENZ and F Y TICHY},
  year = {1957},
  doi = {10.1001/jama.1957.02980340034009},
  url = {https://pubmed.ncbi.nlm.nih.gov/13480860/},
  note = {Source identifier: 13480860}
}