1. Oak Ridge Institute for Science and Education, National Health and Environmental Effects Research Laboratory (NHEERL), U.S. Environmental Protection Agency (EPA), Chapel Hill, North Carolina, USA
2. School of Community Health, College of Urban and Public Affairs, Portland State University, Portland, Oregon, USA
3. Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois, Chicago, Chicago, Illinois, USA
4. NHEERL, U.S. EPA, Chapel Hill, North Carolina, USA
5. UNC Gillings School of Global Public Health, Chapel Hill, North Carolina, USA