@misc{indiciaee599de6ccaff,
  title = {Validation of information recorded on general practitioner based computerised data resource in the United Kingdom.},
  author = {H Jick and S S Jick and L E Derby},
  year = {1991},
  doi = {10.1136/bmj.302.6779.766},
  url = {https://pubmed.ncbi.nlm.nih.gov/2021768/},
  note = {Source identifier: 2021768}
}