Robert Harrison is Clinical Professor of Medicine in the Division of Occupational and Environmental Medicine at the University of California, San Francisco.  He earned his BA degree from the University of Rochester, Rochester, NY; his MD degree from the Albert Einstein College of Medicine, New York; and his MPH degree from the University of California, Berkeley. His research interests include effective public health methods for the collection and analyses of workplace injury and illness data; investigation of new and emerging occupational diseases; and the prevention of work-related fatalities. In 1984, he founded and directed the UCSF Occupational Health Services, where he has diagnosed and treated thousands of cases of workplace injury and disease.  He served as the first physician appointed to the California Safety and Health Standards Board, and as President of the Council of State and Territorial Epidemiologists. Dr. Harrison is Associate Director of the UCSF Occupational Medicine Residency Program, and supervises students in nursing, industrial hygiene and public health at both UCSF and UC Berkeley. He has served on numerous committees and advisory boards, and is currently a member of the NIOSH World Trade Center Scientific and Technical Advisory Committee. He has authored/co-authored more than 75 refereed publications, book chapters, and government reports.  He is currently co-editing one of the major texts in the field of occupational and environmental medicine.