TY - STAND AU - R. Charlton AU - J. Weil AU - M. Cunnington AU - S. Ray AU - C. de Vries BT - Drug Saf DO - 10.2165/11584970-000000000-00000 M1 - 2 PY - 2011 SP - 157 EP - 71 T2 - Drug Saf TI - Comparing the General Practice Research Database and the UK Epilepsy and Pregnancy Register as tools for postmarketing teratogen surveillance: anticonvulsants and the risk of major congenital malformations VL - 34 SN - 0114-5916 ER -