1. EM Frick, MS, is Resident Orthotist/Prosthetist, Department of Orthopedic Surgery & Rehabilitation, University of Oklahoma Health Sciences Center, Oklahoma City, Okla
2. JL Alberts, PhD, is Assistant Staff, Department of Biomedical Engineering and Center for Neurological Restoration, The Cleveland Clinic, Cleveland, OH 44195, and Functional Electrical Stimulation Center, Louis Stokes Veterans Affairs Medical Center, Cleveland, OH 44106