@misc{indiciae71218387676d,
  title = {Appendectomy protects against ulcerative colitis.},
  author = {P Rutgeerts and G D'Haens and M Hiele and K Geboes and G Vantrappen},
  year = {1994},
  doi = {10.1016/0016-5085(94)90016-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/8174886/},
  note = {Source identifier: 8174886}
}