RT Journal Article SR Electronic T1 Multiple sclerosis: liberation procedure JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1449 OP 1449-c DO 10.1503/cmaj.110-2103 VO 182 IS 13 A1 Paul C. Hébert YR 2010 UL http://www.cmaj.ca/content/182/13/1449.4.abstract