@misc{indiciae916b9958513c,
  title = {Perianal ulcer.},
  author = {J F Meis and H van Goor and P E Verweij},
  year = {1999},
  doi = {10.1016/s0140-6736(05)75085-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/10359436/},
  note = {Source identifier: 10359436}
}