@misc{indiciae63a40a986be6,
  title = {[Ulcerative colitis--its course and complications].},
  author = {W Bartnik and Z Bakowska and E Ruzyllo},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4643096/},
  note = {Source identifier: 4643096}
}