RT Journal Article SR Electronic T1 Advertisement JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1529 OP 1529-a DO 10.1503/cmaj.1070161 VO 177 IS 12 A1 Paul C. Hébert, MD MHSc YR 2007 UL http://www.cmaj.ca/content/177/12/1529.2.abstract