RT Journal Article SR Electronic T1 Methylphenidate in the treatment of children with attention-deficit hyperactivity disorder JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1505 OP 1506 VO 165 IS 11 A1 Benedetto Vitiello YR 2001 UL http://www.cmaj.ca/content/165/11/1505.abstract