@misc{indiciae1f2ccd9f1a16,
  title = {A method for determining the sampling ratio in epidemiologic studies.},
  author = {H Morgenstern and D M Winn},
  doi = {10.1002/sim.4780020311},
  url = {https://pubmed.ncbi.nlm.nih.gov/6417752/},
  note = {Source identifier: 6417752}
}