RT Journal Article SR Electronic T1 Challenges of teaching EBM JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1423 OP 1423 DO 10.1503/cmaj.1041600 VO 172 IS 11 A1 Hal Siden YR 2005 UL http://www.cmaj.ca/content/172/11/1423.1.abstract