@misc{indiciaebeb88d99c134,
  title = {A practical aid in colonoscopy.},
  author = {E B Eusebio},
  year = {1989},
  doi = {10.1007/bf02552281},
  url = {https://pubmed.ncbi.nlm.nih.gov/2806030/},
  note = {Source identifier: 2806030}
}