@misc{9946,
  author = {A. Nightingale and R. Farmer and C. de Vries},
  title = {Systemic lupus erythematosus prevalence in the UK: methodological issues when using the General Practice Research Database to estimate frequency of chronic relapsing-remitting disease},
  year = {2007},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {16},
  number = {2},
  pages = {144-51},
  issn = {1053-8569 (Print) 1053-8569},
  doi = {10.1002/pds.1253},
}