@misc{indiciae46a5772fe1b7,
  title = {Introduction to endoscopy.},
  author = {B D Jones and M E Gross},
  year = {1990},
  doi = {10.1016/s0195-5616(90)50300-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/2238366/},
  note = {Source identifier: 2238366}
}