[1] Univ Toronto, Dalla Lana Sch Publ Hlth, Dept Epidemiol, Toronto, ON, Canada
[2] Brown Univ, Dept Behav & Social Sci, Ctr Alcohol & Addict Studies, Sch Publ Hlth, Providence, RI 02912 USA
[3] Univ Toronto, Temerty Fac Med, Toronto, ON, Canada
[4] Brown Univ, Dept Psychiat & Human Behav, Alpert Med Sch, Providence, RI USA
[5] Providence Coll, Dept Psychol, Providence, RI USA
[6] Tufts Univ, Dept Publ Hlth & Community Med, Sch Med, Boston, MA 02155 USA