@misc{indiciae94d750dbe717,
  title = {Colonoscopy in surgical practice.},
  author = {D C Britton and D Tregoning and G Bone and S T McKelvey},
  year = {1977},
  doi = {10.1136/bmj.1.6054.149},
  url = {https://pubmed.ncbi.nlm.nih.gov/832042/},
  note = {Source identifier: 832042}
}