@misc{indiciaead24d8ed5838,
  title = {The case control or retrospective study in retrospect.},
  author = {M W Smith},
  year = {1981},
  doi = {10.1002/j.1552-4604.1981.tb01765.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7263924/},
  note = {Source identifier: 7263924}
}