@misc{indiciaee0d1f9ffae63,
  title = {"Directionality" in epidemiologic research.},
  author = {O S Miettinen},
  year = {1989},
  doi = {10.1016/0895-4356(89)90093-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/2778462/},
  note = {Source identifier: 2778462}
}