@misc{indiciae7fabe2832628,
  title = {Primary colonoscopy.},
  author = {R J Leicester},
  year = {1991},
  doi = {10.1016/0950-3528(91)90013-q},
  url = {https://pubmed.ncbi.nlm.nih.gov/1854988/},
  note = {Source identifier: 1854988}
}