1 Environmental Health Sciences Graduate Program, Susan and Henry Samueli College of Health Sciences, University of California, Irvine, CA, USA.
2 Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California, Irvine, 653 E. Peltason Dr., AIRB 2042, Irvine, CA, 92697-3957, USA.
3 Department of Statistics, Donald Bren School of Information and Computer Sciences, University of California, Irvine, CA, USA.
4 Department of Epidemiology, School of Medicine, Susan and Henry Samueli College of Health Sciences, University of California, Irvine, CA, USA.
5 Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, GA, USA.
6 Department of Community Health Sciences, Boston University School of Public Health, Boston, MA, USA.
7 School of Community Health Sciences, University of Nevada, Reno, NV, USA.
8 Environmental Health Sciences Graduate Program, Susan and Henry Samueli College of Health Sciences, University of California, Irvine, CA, USA. vvieira@uci.edu.
9 Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California, Irvine, 653 E. Peltason Dr., AIRB 2042, Irvine, CA, 92697-3957, USA. vvieira@uci.edu.