@misc{indiciaefacec89c70dc,
  title = {Risk factors for ulcerative reflux oesophagitis: a case-control study.},
  author = {P Ryan and D J Hetzel and D J Shearman and A J McMichael},
  doi = {10.1111/j.1440-1746.1995.tb01098.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7548808/},
  note = {Source identifier: 7548808}
}