@misc{indiciaecf4363394046,
  title = {Endoscopy in inflammatory bowel disease.},
  author = {P Rutgeerts and G Vantrappen and K Geboes},
  year = {1989},
  doi = {10.3109/00365528909091341},
  url = {https://pubmed.ncbi.nlm.nih.gov/2617183/},
  note = {Source identifier: 2617183}
}