RT Journal Article SR Electronic T1 Correction: A cross-sectional examination of medicinal substance abuse and use of nonmedicinal substances among Canadian youth: findings from the 2012-2013 Youth Smoking Survey JF CMAJ Open FD Canadian Medical Association SP E395 OP E395 DO 10.9778/cmajo.20150119 VO 3 IS 4 YR 2015 UL http://www.cmajopen.ca/content/3/4/E395.abstract AB