[1] Northwestern Univ, Dept Prevent Med, Feinberg Sch Med, Chicago, IL 60611 USA
[2] San Diego State Univ, Grad Sch Publ Hlth, Inst Behav & Community Hlth, San Diego, CA 92182 USA
[3] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Biostat, Chapel Hill, NC USA
[4] Albert Einstein Coll Med, Dept Epidemiol & Populat Hlth, Bronx, NY 10467 USA
[5] San Diego State Univ, Grad Sch Publ Hlth, Div Hlth Promot & Behav Sci, San Diego, CA 92182 USA
[6] Wayne State Univ, Inst Gerontol, Detroit, MI 48202 USA
[7] Univ Illinois, Inst Minor Hlth Res, Chicago, IL USA