[1] Univ Calif Berkeley, Sch Publ Hlth, Div Environm Hlth Sci & Epidemiol, Superfund Res Program, Berkeley, CA 94720 USA
[2] Pontificia Univ Catolica Chile, Fac Med, Dept Salud Publ, Adv Ctr Chron Dis ACCDiS, Santiago, Chile
[3] Univ Washington, Sch Publ Hlth, Dept Environm & Occupat Hlth Sci, Seattle, WA 98195 USA