[1] Emory Univ, Sch Publ Hlth, BSHES Dept, Atlanta, GA 30322 USA
[2] Univ Kentucky, Coll Publ Hlth, Dept Epidemiol & Environm Hlth, Lexington, KY USA
[3] Univ Kentucky, Ctr Drug & Alcohol Res, Lexington, KY USA
[4] West Virginia Univ, Sch Med, Dept Behav Med, Morgantown, WV USA
[5] Oregon Hlth & Sci Univ, Dept Med, Sect Addict Med, Portland, OR USA
[6] Univ Wisconsin, Populat Hlth Inst, Madison, WI USA
[7] Southern Illinois Univ, Sch Med, Dept Populat Sci & Policy, Carbondale, IL USA
[8] Univ Washington, Dept Med, Div Allergy & Infect Dis, Seattle, WA USA
[9] Univ Wisconsin, Sch Med & Publ Hlth, Dept Med, Madison, WI USA
[10] Ohio State Univ, Coll Publ Hlth, Div Epidemiol, Columbus, OH USA
[11] RTI Int, Res Triangle Pk, NC USA
[12] Univ N Carolina, Inst Global Hlth & Infect Dis, Chapel Hill, NC USA
[13] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Hlth Behav, Chapel Hill, NC USA
[14] Univ New Hampshire, Coll Hlth, Dept Nursing & Human Serv, Durham, NH USA
[15] Emory Univ, 1518 Clifton RD,GCR 558, Atlanta, GA 30322 USA
[16] Southern Illinois Univ, Dept Publ Hlth, Carbondale, IL USA