@misc{10464,
  author = {H. Jick and S. Jick and L. Derby},
  title = {Validation of information recorded on general practitioner based computerised data resource in the United Kingdom},
  year = {1991},
  journal = {Bmj},
  volume = {302},
  number = {6779},
  pages = {766-8},
  issn = {0959-8138 (Print) 0959-8138},
}