@misc{indiciaea40bf3dfee6b,
  title = {Databases for gastrointestinal endoscopy.},
  author = {F Naffah},
  doi = {10.1016/s0016-5107(91)70791-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/1842212/},
  note = {Source identifier: 1842212}
}