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mechanisms of upper extremity tendon, nerve, and muscle injury and repair associated with repeated loading, occupational biomechanics, musculoskeletal disorder epidemiology, and hand tool design.

Robert M. Szabo is chief, Hand and Microvascular Service, Department of Orthopaedics; professor, Department of Orthopaedic Surgery; and professor, Department of Surgery, Division of Plastic Surgery, at the University of California at Davis. His current research interests include nerve compression lesions, nerve repair and regeneration biology, tendon healing and adhesion formation, and the epidemiology of repetitive trauma and injury prevention. He specializes in complex hand, upper extremity, and shoulder reconstructions after tumor resections, as well as soft tissue and bone transfers to the lower extremities.

David Vlahov is director of the Center for Urban Epidemiologic Studies at the New York Academy of Medicine. He is on a leave of absence from Johns Hopkins University, where he is professor and deputy chairman in the Department of Epidemiology. He has coordinated several large clinical epidemiologic studies of HIV infection among drug users (e.g., the ALIVE study) and is the principal evaluator of the Washington, D.C., and Baltimore needle exchange programs. He has a particular interest in research methods in field settings. He was a member of the NRC Steering Committee for the Workshop on Work-Related Musculoskeletal Injuries: The Research Base.

David H. Wegman is the founding chair of the Department of Work Environment in the Engineering College at the University of Massachusetts, Lowell, now one of the leading preventive medicine (occupational medicine) research centers. His research has focused on epidemiologic studies of occupational respiratory disease, musculoskeletal disorders, and cancer. A continuing research interest has been in developing methods to study subjective outcomes, such as musculoskeletal and respiratory or irritant symptoms reports.

Alexandra K. Wigdor is deputy director of the Commission on Behavioral and Social Sciences and Education (CBASSE) and formerly director of the Division on Education, Labor, and Human Performance. A member of the National Research Council research staff since 1978, she has been instrumental in developing the education and behavioral science program in CBASSE.



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