@misc{indiciae2a42dd3dbcf4,
  title = {Risk set sampling for case-crossover designs.},
  author = {William Navidi and Eric Weinhandl},
  year = {2002},
  doi = {10.1097/00001648-200201000-00016},
  url = {https://pubmed.ncbi.nlm.nih.gov/11805593/},
  note = {Source identifier: 11805593}
}