@misc{indiciae1890e6d1909f,
  title = {Proctoscopy and sigmoidoscopy.},
  author = {D J Ellis and P G Bevan},
  year = {1980},
  doi = {10.1136/bmj.281.6237.435},
  url = {https://pubmed.ncbi.nlm.nih.gov/7427305/},
  note = {Source identifier: 7427305}
}