[1] Univ Calif Berkeley, Computat Biol Grad Grp, Berkeley, CA 94720 USA
[2] Karolinska Inst, Inst Environm Med, Stockholm, Sweden
[3] Univ Calif Berkeley, Sch Publ Hlth, Div Epidemiol, Berkeley, CA 94720 USA
[4] Kaiser Permanente, Div Res, Oakland, CA USA
[5] Kaiser Permanente, Res Program Genes Environm & Hlth, Oakland, CA USA
[6] Karolinska Univ Hosp, Dept Clin Neurosci, Stockholm, Sweden
[7] Karolinska Univ Hosp, Karolinska Inst, Ctr Mol Med, Stockholm, Sweden
[8] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA
[9] Stockholm Cty Council, Ctr Occupat & Environm Med, Stockholm, Sweden