physiology, mycotoxicology, and HACCP systems. He has published approximately 300 manuscripts, book chapters, and abstracts on a wide range of subjects related to food safety, and is one of the co-developers of the widely used USDA Pathogen Modeling Program. He also has an ongoing interest in the development of science-based public health policy. In addition to currently serving as the FDA CFSAN Senior Science Advisor, he has served as Deputy Administrator for Science with the USDA Food Safety and Inspection Service, and is the U.S. Delegate to the Codex Alimentarius Commission Committee on Food Hygiene. Dr. Buchanan serves on the editorial boards of several journals, and is a member of the International Commission on Microbiological Specification for Foods. He has also served as a member of the National Academy of Science's Institute of Medicine Committee on Emerging Microbial Threats and the National Advisory Committee on Microbiological Criteria for Foods.

Laina Bush, M.B.A., is Team Leader for Science Policy within the Office of the Science and Data Policy of the Office of the Assistant Secretary for Planning and Evaluation at the Department of Health and Human Services (HHS). As Team Leader, she serves as senior policy analyst, advisor, and supervisor with major responsibility for policy research, analysis, evaluation, leadership, and planning related to activities of the science based agencies in HHS (FDA, NIH, and CDC) as well as public health science policy issues generally.

Ms. Bush has previously worked at the FDA and at the Office of Management and Budget’s Office of Information and Regulatory Affairs.

Some of her research projects have included examinations of best practices within industry and state governments to manage costs of prescription drugs, international drug price comparisons, food labeling and weight management, medical and public health issues related to mercury, and the impacts of direct to consumer advertising of pharmaceuticals.

She has served on many work groups and task forces including the 2005 Dietary Guidelines for Americans drafting committee, Toxics and Risk Subcommittee, Interagency Working Group on Mercury, Interagency Working Group on Dioxin, Katrina Environmental Impacts and Cleanup Workgroup, Women’s Health Committee on Breastfeeding, and the President’s Council for Food Safety Strategic Planning Task Force.

William Dietz, M.D., Ph.D., is the director of the Division of Nutrition and Physical Activity in the National Center for Chronic Disease Preven-

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