@misc{indiciae524ef776a3d9,
  title = {Cigarette smoking and ulcerative colitis.},
  author = {H Jick and A M Walker},
  year = {1983},
  doi = {10.1056/nejm198302033080507},
  url = {https://pubmed.ncbi.nlm.nih.gov/6848937/},
  note = {Source identifier: 6848937}
}