TY - STAND AU - R. Charlton AU - M. Cunnington AU - C. de Vries AU - J. Weil BT - Drug Saf M1 - 1 PY - 2008 SP - 39 EP - 51 T2 - Drug Saf TI - Data resources for investigating drug exposure during pregnancy and associated outcomes: the General Practice Research Database (GPRD) as an alternative to pregnancy registries VL - 31 SN - 0114-5916 (Print) 0114-5916 ER -