机译:Association Between Contraband Tobacco and Illicit Drug Use Among High School Students in Canada
Univ Waterloo, Fac Appl Hlth Sci, Propel Ctr Populat Hlth Impact, Waterloo, ON N2L 3G1, Canada;
Univ Alberta, Dept Econ, Edmonton, AB T6G 2E1, Canada;
Univ Waterloo, Sch Publ Hlth & Hlth Syst, Waterloo, ON N2L 3G1, Canada;