@misc{indiciae69b288b58b09,
  title = {Retrospective data collection using event history calendars.},
  author = {Kristy K Martyn and Robert F Belli},
  doi = {10.1097/00006199-200207000-00008},
  url = {https://pubmed.ncbi.nlm.nih.gov/12131240/},
  note = {Source identifier: 12131240}
}