@misc{9953,
  author = {K. Wurst and S. Ephross and J. Loehr and D. Clark and H. Guess},
  title = {The utility of the general practice research database to examine selected congenital heart defects: a validation study},
  year = {2007},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {16},
  number = {8},
  pages = {867-77},
  issn = {1053-8569 (Print) 1053-8569},
  doi = {10.1002/pds.1431},
}