About the Authors Tarek M. Khalil, Ph.D., P.E., is Chairman of the Department of Industrial Engineering and Professor of Industrial Engineering Biomedical Engineering, Neurological Surgery, and Epidemiology and Public Health, as well as Chief of the Ergonomics Division of the Comprehensive Pain and Rehabilitation Center, at the University of Miami, Florida. Elsayed M. Abdel-Moty, Ph.D., is Research Assistant Professor in the Department of Industrial Engineering and Clinical Supervisor of the Ergonomics Division of the Comprehensive Pain and Rehabilitation Center, at the University of Miami, Fl...