@misc{indiciae7256269a1919,
  title = {Appendicectomy and ulcerative colitis.},
  author = {P C J ter Borg and H R van Buuren},
  year = {2003},
  doi = {10.1136/gut.52.5.768},
  url = {https://pubmed.ncbi.nlm.nih.gov/12692069/},
  note = {Source identifier: 12692069}
}