@misc{indiciaee06eee66ffd8,
  title = {The case control study: the problem and the prospect.},
  author = {M A Ibrahim and W O Spitzer},
  year = {1979},
  doi = {10.1016/0021-9681(79)90026-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/312803/},
  note = {Source identifier: 312803}
}