RT Journal Article SR Electronic T1 Regulating electronic cigarettes: finding the balance between precaution and harm reduction JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 862 OP 864 DO 10.1503/cmaj.150347 VO 187 IS 12 A1 Ronald Labonté A1 Raphael Lencucha YR 2015 UL http://www.cmaj.ca/content/187/12/862.abstract