[1] Univ Calif San Diego, Sch Med, Div Global Publ Hlth, Dept Med, 9500 Gilman Dr, La Jolla, CA 92093 USA
[2] Univ Southern Calif, Div Hlth Behav Res, Inst Prevent Res, Dept Prevent Med,Keck Sch Med, Los Angeles, CA USA
[3] Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[4] Ctr Addict & Mental Hlth, Toronto, ON, Canada
[5] RTI Int, Behav & Urban Hlth Program, San Francisco, CA USA
[6] Univ Tartu, Inst Family Med & Publ Hlth, Fac Med, Tartu, Estonia
[7] Icahn Sch Med Mt Sinai, Edmond Rothschild Chem Dependency Inst, New York, NY 10029 USA