@misc{indiciae3afce409e938,
  title = {Ulcerative colitis: recent developments.},
  author = {K H Tytgat and N J Lygidakis},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2680854/},
  note = {Source identifier: 2680854}
}