TY - STAND AU - K. Wurst AU - S. Ephross AU - J. Loehr AU - D. Clark AU - H. Guess BT - Pharmacoepidemiol Drug Saf DO - 10.1002/pds.1431 M1 - 8 PY - 2007 SP - 867 EP - 77 T2 - Pharmacoepidemiol Drug Saf TI - The utility of the general practice research database to examine selected congenital heart defects: a validation study VL - 16 SN - 1053-8569 (Print) 1053-8569 ER -