@misc{indiciae8d0abf89d470,
  title = {Ulcerative colitis.},
  author = {L ZETZEL},
  year = {1954},
  doi = {10.1056/nejm195410142511606},
  url = {https://pubmed.ncbi.nlm.nih.gov/13214303/},
  note = {Source identifier: 13214303}
}