@misc{indiciaeb85643fdd067,
  title = {Multi-stage sampling in genetic epidemiology.},
  author = {A S Whittemore and J Halpern},
  doi = {10.1002/(sici)1097-0258(19970130)16:2<153::aid-sim477>3.0.co;2-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/9004389/},
  note = {Source identifier: 9004389}
}