@misc{indiciaeda60edab40a9,
  title = {Selection of elderly controls using random digit dialing.},
  author = {G W Olsen and J S Mandel},
  year = {1988},
  doi = {10.2105/ajph.78.11.1487},
  url = {https://pubmed.ncbi.nlm.nih.gov/3177729/},
  note = {Source identifier: 3177729}
}