and worked as a consultant with the Risk Sciences Institute within the International Life Sciences Institute. Dr. Patton was formerly a member of the NRC Board on Environmental Studies and Toxicology. She has also been a member of several NRC committees, including Human Biomonitoring for Environmental Toxicants, Metrics for Global Change Research, EPA Assessment Factors for Data Quality, Review of NASA’s Earth Science Applications Program Strategic Plan, and the NRC Committee on Improving Risk Analysis Approaches Used by the United States EPA. She is currently a member of the IOM Committee on Decision-Making Under Uncertainty. Dr. Patton received a Ph.D. in Developmental Biology from the University of Chicago and a J.D. from the Columbia University School of Law.
William M. Valentine, Ph.D., D.V.M., is associate professor of pathology and researcher at the Vanderbilt University Medical Center. His research specializes in the mechanisms of environmental neurotoxicants and neurodegenerative disease. Dr. Valentine’s current research includes delineating the molecular mechanisms of chemical agents that produce peripheral neuropathies. He is also investigating the role of copper dysregulation in neurodegenerative disease. Dr. Valentine has served on several NRC and IOM committees, including the Committee on Gulf War and Health: Literature Review of Selected Environmental Agents, Pollutants, and Synthetic Chemical Compounds, the Committee on Gulf War and Health: Review of the Literature on Pesticides and Solvents: Solvent Panel, and the Subcommittee on Jet Propulsion Fuel 8. Dr. Valentine earned his Ph.D. from the University of Illinois, Chicago, Illinois, and his D.V.M. from the University of Illinois, Champaign, Illinois.
Bailus Walker, Ph.D., M.P.H., is a professor of environmental and occupational medicine and toxicology at Howard University College of Medicine. His research interests include lead toxicity and environmental carcinogenesis. Dr. Walker has served as commissioner of public health for the Commonwealth of Massachusetts; chairman of the Massachusetts Public Health Council; and state director of public health for Michigan. He is past president of the American Public Health Association, and a distinguished fellow of both the Royal Society of Health and the American College of Epidemiology. Dr. Walker is currently a senior science advisor for environmental health to the National Library of Medicine and he is a member of the IOM. He has also served on several NRC committees, most recently the Committee on Improving Risk Analysis Approaches Used by the U.S. EPA; the Committee on Mine Placement of Coal Combustion Wastes; the Committee on Toxicology; and the Committee for the Review of the Army’s Enhanced Particulate Matter Surveillance Program Report. Dr. Walker received a Ph.D. in occupational and environmental medicine from the University of Minnesota.