@misc{indiciae2d9e5f5aae62,
  title = {Study design V. Case-control studies.},
  author = {Kate Ann Levin},
  year = {2006},
  doi = {10.1038/sj.ebd.6400436},
  url = {https://pubmed.ncbi.nlm.nih.gov/17003803/},
  note = {Source identifier: 17003803}
}