@misc{indiciae55320650033f,
  title = {Endoscopy and ethics.},
  author = {S E Hedberg},
  year = {1981},
  doi = {10.1097/00004836-198106000-00022},
  url = {https://pubmed.ncbi.nlm.nih.gov/7240701/},
  note = {Source identifier: 7240701}
}