@misc{indiciae17876f264f2b,
  title = {Peroral endoscopy.},
  author = {L H CLERF and F J PUTNEY and J J O'KEEFE},
  year = {1951},
  doi = {10.1001/archotol.1951.03750060074014},
  url = {https://pubmed.ncbi.nlm.nih.gov/14837562/},
  note = {Source identifier: 14837562}
}