1. Nicholas School of the Environment, Duke University, Durham, NC, USA,
2. Arnold School of Public Health, University of South Carolina, Columbia, SC, USA,
3. U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory – Atlantic Ecology Division, Narragansett, RI, USA,
4. U.S. Environmental Protection Agency, Office of Pesticides Program – Health Effects Division, Arlington, VA, USA,
5. Department of Civil and Environmental Engineering, Duke University, Durham, NC, USA, and
6. Center for Environmental Implications of NanoTechnologies, Duke University, Durham, NC, USA