oncogene activation, and mechanisms of signaling in human mammary epithelial cells. Dr. Burchiel was a member of the National Research Council Committee on Assessing Human Health Risks of Trichloroethylene. He received his PhD in pharmacology from the University of California, San Francisco.

Lung Chi Chen is an associate professor in the Department of Environmental Medicine at the New York University (NYU) School of Medicine. He is also director of the Inhalation Facility for the National Institute for Environmental Health Sciences Center of Excellence. His research interests are inhalation toxicology and exposure-response relationships. His recent research has focused on nanoparticle toxicity and functional use, the role of health disparity in air-pollution–induced cardiopulmonary diseases, and gene-environment interactions in environmentally induced diseases. Dr. Chen is vice president-elect of the Inhalation Specialty Section of the Society of Toxicology. He received his MS and PhD in environmental health science from NYU.

David Díaz-Sánchez is an associate professor in the Department of Medicine at the University of California, Los Angeles. His research interests are in the use of human and animal models to understand the ability of environmental agents to affect immune responses, particularly agents that modulate allergic and asthmatic responses. His recent work has focused on how diesel exhaust particles exacerbate allergy and asthma, the role of phase II enzymes in conferring susceptibility to pollutants, and the role of oxidative stress in susceptibility to particulate matter and in the potency of particles in promoting airway inflammation. Dr. Díaz-Sánchez is a member of the National Ambient Air Monitoring Strategy Subcommittee of the U.S. Environmental Protection Agency’s Clean Air Science Advisory Committee. He received his PhD from Guy’s Hospital in London.

David G. Hoel is Distinguished University Professor in the Department of Biostatistics, Bioinformatics, and Epidemiology at the Medical University of South Carolina. He also holds an appointment as clinical professor in the Department of Radiology at the University of South Carolina School of Medicine. His research interests are in environmental causes of cancer, risk-assessment models, and epidemiology. Dr. Hoel was elected to the Institute of Medicine in 1988 and was named a national associate of the National Academies in 2001. He received his PhD in statistics from the University of North Carolina at Chapel Hill.

Loren D. Koller is an independent consultant and former professor and dean of the College of Veterinary Medicine at Oregon State University. His expertise is in pathology, toxicology, immunotoxicology, carcinogenesis, and risk assessment. He is a former member of the National Research Council Committee on Toxicology and of several of its subcommittees, including the Subcommittee on Immunotoxicity and the Subcommittee on Zinc Cadmium Sulfide. He serves on the Committee to Review Chemical Agent Secondary Waste Disposal and Regulatory Requirements. He received his DVM from Washington State University and his PhD in pathology from the University of Wisconsin.

David Kriebel is a professor of epidemiology in the Department of Work Environment at the University of Massachusetts Lowell and codirector of the Lowell Center for Sustainable Production. His research interests are in the epidemiology of cancer, nonmalignant respiratory disease, and workplace injury. He has conducted research on human exposure to asbestos, beryllium, formaldehyde, metal-working fluids, and other environmental and occupational substances. Dr. Kriebel also conducts research on epidemiologic methods aimed particularly at improving the use of quantitative exposure data in epidemiology through biologically based dosimetric models. With Harvey Checkoway and Neil Pearce, he is a coauthor of the leading textbook of occupational epidemiology, Research Methods in Occupational Epidemiology. He served on two Institute of Medicine committees that evaluated the health effects of exposure to herbicides in Vietnam veterans. He received his ScM in physiology and ScD in epidemiology and occupational health from the Harvard School of Public Health.

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