@misc{indiciae0b7f700384dd,
  title = {Is appendectomy a causative factor in ulcerative colitis?},
  author = {M G Russel and R W Stockbrügger},
  year = {1998},
  doi = {10.1097/00042737-199806000-00003},
  url = {https://pubmed.ncbi.nlm.nih.gov/9855058/},
  note = {Source identifier: 9855058}
}