RT Journal Article SR Electronic T1 Antiepileptic drugs and warfarin JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 65 OP 65 DO 10.1503/cmaj.1070121 VO 178 IS 1 A1 Ahmed, S. Nizam YR 2008 UL http://www.cmaj.ca/content/178/1/65.1.abstract