@misc{indiciaed0676e8220bf,
  title = {Therapeutic endoscopy.},
  author = {K H Soergel and W J Hogan},
  year = {1983},
  doi = {10.1080/21548331.1983.11702540},
  url = {https://pubmed.ncbi.nlm.nih.gov/6404809/},
  note = {Source identifier: 6404809}
}