@misc{indiciae20fb2fc8db92,
  title = {Gastrointestinal endoscopy: some perspectives.},
  author = {A K Grant and H A Harley},
  year = {1982},
  doi = {10.1136/bmj.285.6345.868},
  url = {https://pubmed.ncbi.nlm.nih.gov/6811049/},
  note = {Source identifier: 6811049}
}