@misc{indiciae4500460c307d,
  title = {Vaccine evaluation by case-control or prospective studies.},
  author = {G W Comstock},
  year = {1990},
  doi = {10.1093/oxfordjournals.aje.a115490},
  url = {https://pubmed.ncbi.nlm.nih.gov/2296974/},
  note = {Source identifier: 2296974}
}