@misc{9130,
  author = {C. Sammon and A. Miller and K. Mahtani and T. Holt and N. McHugh and R. Luqmani and A. Nightingale},
  title = {Missing laboratory test data in electronic general practice records: analysis of rheumatoid factor recording in the clinical practice research datalink},
  year = {2015},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {24},
  number = {5},
  pages = {504-9},
  issn = {1053-8569},
  doi = {10.1002/pds.3750},
}