@misc{indiciaec2d86eae7f14,
  title = {Fibreoptic colonoscope.},
  author = {A C Dean and D J Shearman},
  year = {1970},
  doi = {10.1016/s0140-6736(70)92771-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4191975/},
  note = {Source identifier: 4191975}
}