@misc{indiciae501b86dc2909,
  title = {Effect of coding changes on ulcer incidence trends.},
  author = {T M Vogt and R E Johnson},
  year = {1984},
  doi = {10.2105/ajph.74.3.271},
  url = {https://pubmed.ncbi.nlm.nih.gov/6696162/},
  note = {Source identifier: 6696162}
}