@misc{10081,
  author = {J. Lewis and C. Brensinger},
  title = {Agreement between GPRD smoking data: a survey of general practitioners and a population-based survey},
  year = {2004},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {13},
  number = {7},
  pages = {437-41},
  issn = {1053-8569 (Print) 1053-8569},
  doi = {10.1002/pds.902},
}