@misc{indiciae63d855ef7cfc,
  title = {What is a case-control study?},
  author = {T Marshall},
  year = {2004},
  doi = {10.1093/ije/dyh055},
  url = {https://pubmed.ncbi.nlm.nih.gov/15163641/},
  note = {Source identifier: 15163641}
}