@misc{indiciaeaebcd76fe0ca,
  title = {[Ulcerative colitis--epidemiological data and manifestations].},
  author = {E Ruzyllo and W Bartnik and Z Bakowska},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4643099/},
  note = {Source identifier: 4643099}
}