gator on exposure assessment for epidemiological investigations of potentially benzene-related or other occupational exposure-related hematopoietic diseases in Shanghai, China. Dr. Armstrong spent 9 years working for the Linde Group as the manager of loss control in the gases division and as a manager of safety and industrial hygiene. He conducted research on quantitative risk-assessment models for inhalation exposure to Legionella and remains professionally active on that topic. He has recently contributed to publications on mathematical models to estimate exposures to hazardous materials and on methods of exposure reconstruction. He was a member of the Society for Risk Analysis and remains an active member of the American Industrial Hygiene Association. The American Board of Industrial Hygiene has certified him as an industrial hygienist. Dr. Armstrong received his Ph.D. in environmental engineering and M.S. in environmental health from Drexel University.

Richard E. Breitmeyer was appointed director of the California Animal Health and Food Safety Laboratory System in November 2010. Operating under the administration of the University of California at Davis (UC Davis) School of Veterinary Medicine, the laboratory system is the backbone of California’s animal disease surveillance and detection system and is used to safeguard human and animal health from naturally occurring or intentionally introduced animal diseases by rapidly and reliably diagnosing diseases found in animals. Before joining UC Davis, Dr. Breitmeyer had a 26-year career with the California Department of Food and Agriculture (CDFA), serving as California’s state veterinarian from 1993 to 2010. As state veterinarian, he had the statutory authority to quarantine domestic animals or food to protect the health and safety of animals and the public. From 1993 to 2004, Dr. Breitmeyer also served as the director of Animal Health and Food Safety Services and oversaw an annual budget of $30 million and 250 employees engaged in programs for animal health, milk and dairy foods control, meat and poultry inspection, and livestock identification. Before joining CDFA, he was a private practitioner in Humboldt and San Luis Obispo counties. Dr. Breitmeyer is an active member of many state and national organizations and is the immediate past president of the United States Animal Health Association. He also served for 10 years on the Secretary of Agriculture’s Advisory Committee for Foreign Animal and Poultry Diseases. Dr. Breitmeyer received his D.V.M. and M.P.V.M. degrees from UC Davis, and he conducted his undergraduate studies at California Polytechnic State University, San Luis Obispo.

Corrie C. Brown is the Josiah Meigs Distinguished Teaching Professor in the College of Veterinary Medicine at the University of Georgia. Her research includes the study of pathogenesis of infectious disease in food-

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