@misc{indiciaef004ed68e4d6,
  title = {Cigarette smoking and ulcerative colitis. A case control study.},
  author = {D Lorusso and S Leo and G Misciagna and V Guerra},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2807139/},
  note = {Source identifier: 2807139}
}