1. Department of Psychology, San Francisco State University, San Francisco, CA, USA
2. Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
3. Department of Psychiatry, University of California San Francisco, San Francisco, CA, USA
4. ATSDR, Chicago, IL, USA
5. National Health and Environmental Effects Research Laboratory, U.S. EPA, Research Triangle Park, NC, USA