@misc{indiciae3f671f6e7ba3,
  title = {Case-control studies.},
  author = {R L Cumming and J L Kelsey},
  year = {1989},
  doi = {10.1093/ije/18.3.725},
  url = {https://pubmed.ncbi.nlm.nih.gov/2807683/},
  note = {Source identifier: 2807683}
}