@misc{indiciaee5ec0e2698c4,
  title = {Letter: Colonic bleeding.},
  author = {H Droller and H Herlinger},
  year = {1974},
  doi = {10.1016/s0140-6736(74)92413-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4131458/},
  note = {Source identifier: 4131458}
}