[1] Univ Michigan, Sch Publ Hlth, Dept Environm Hlth Sci, Ann Arbor, MI 48109 USA
[2] Drexel Univ, Sch Publ Hlth, Dept Epidemiol & Biostat, Philadelphia, PA 19104 USA
[3] Univ Michigan, Sch Publ Hlth, Dept Epidemiol, Ann Arbor, MI 48109 USA
[4] Wake Forest Univ Hlth Sci, Div Publ Hlth Sci, Winston Salem, NC USA
[5] Fdn Santa Fe Bogota, Bogota, DC, Colombia
[6] Columbia Univ, Dept Med, Med Ctr, New York, NY USA
[7] Columbia Univ, Dept Epidemiol, Med Ctr, New York, NY USA
[8] Univ Washington, Sch Publ Hlth, Dept Environm & Occupat Hlth Sci, Seattle, WA 98195 USA