@misc{8177,
  author = {C. Minassian and R. Williams and W. Meeraus and L. Smeeth and O. Campbell and S. Thomas},
  title = {Methods to generate and validate a Pregnancy Register in the UK Clinical Practice Research Datalink primary care database},
  year = {2019},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {28},
  number = {7},
  pages = {923-933},
  issn = {1053-8569},
  doi = {10.1002/pds.4811},
}