@misc{indiciaeabfdda160e7a,
  title = {Gastrointestinal endoscopy.},
  author = {T D Bolin},
  doi = {10.5694/j.1326-5377.1992.tb141314.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1454030/},
  note = {Source identifier: 1454030}
}