@misc{indiciae8a34c641b7df,
  title = {Colonoscopy for unexplained rectal bleeding.},
  author = {M B Fried},
  year = {1979},
  doi = {10.1136/bmj.1.6165.753-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/312123/},
  note = {Source identifier: 312123}
}