RT Journal Article SR Electronic T1 Smoking v. nicotine JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 214 OP 214 DO 10.1503/cmaj.112-2010 VO 184 IS 2 A1 Stuart H. Kreisman YR 2012 UL http://www.cmaj.ca/content/184/2/214.1.abstract