@misc{7761,
  author = {T. Burkard and M. Rauch and S. Jick and C. Meier},
  title = {Validity of bariatric surgery codes in the UK Clinical Practice Research Datalink (CPRD) GOLD compared with Hospital Episodes Statistics},
  year = {2021},
  journal = {Pharmacoepidemiol Drug Saf},
  issn = {1053-8569},
  doi = {10.1002/pds.5221},
}