@misc{indiciae7ad4b7cfe269,
  title = {Sampling strategies in nested case-control studies.},
  author = {B Langholz and D Clayton},
  year = {1994},
  doi = {10.1289/ehp.94102s847},
  url = {https://pubmed.ncbi.nlm.nih.gov/7851330/},
  note = {Source identifier: 7851330}
}