@misc{indiciae66e7df5be1fe,
  title = {Analysis on observational data that are of questionable validity.},
  author = {Peter S Millard},
  doi = {10.3122/jabfm.19.4.431},
  url = {https://pubmed.ncbi.nlm.nih.gov/16809665/},
  note = {Source identifier: 16809665}
}