RT Journal Article SR Electronic T1 Use of most drugs by American teens drops JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E178 OP E178 DO 10.1503/cmaj.1095379 VO 189 IS 4 A1 Rankin, Jay YR 2017 UL http://www.cmaj.ca/content/189/4/E178.abstract