@misc{indiciae874ba198e756,
  title = {Factors affecting colectomy rate in ulcerative colitis: an epidemiologic study.},
  author = {C E Leijonmarck and P G Persson and G Hellers},
  year = {1990},
  doi = {10.1136/gut.31.3.329},
  url = {https://pubmed.ncbi.nlm.nih.gov/2323599/},
  note = {Source identifier: 2323599}
}