@misc{9709,
  author = {S. Devine and S. West and E. Andrews and P. Tennis and T. Hammad and S. Eaton and J. Thorp and A. Olshan},
  title = {The identification of pregnancies within the general practice research database},
  year = {2010},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {19},
  number = {1},
  pages = {45-50},
  issn = {1053-8569},
  doi = {10.1002/pds.1862},
}