1. Department of Environmental Sciences and Engineering, University of North Carolina, CB 7400, Chapel Hill, North Carolina 27599-7400, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, Research Triangle Institute, Research Triangle Park, North Carolina 27711, Texas Birth Defects Monitoring Division, Texas Department of Health, Austin, TX 78756,...