1. National Research Council, Washington, DC, USA
2. National Center for Environmental Assessment, U.S. Environmental Protection Agency, Cincinnati, Ohio, USA
3. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
4. Association of Schools of Public Health, Washington, DC, USA
5. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina–Chapel Hill, Chapel Hill, North Carolina, USA
6. National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
7. Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina–Chapel Hill, Chapel Hill, North Carolina, USA
8. Departments of Community Health and Obstetrics and Gynecology, Brown University, Providence, Rhode Island, USA