@misc{indiciaec9840c5b0e2b,
  title = {The relation between radiological changes and clinical state in ulcerative colitis.},
  author = {B Korsgaard and M Holm and M Katznelson},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/4899637/},
  note = {Source identifier: 4899637}
}