1. PL Scheets, PT, DPT, NCS, is Manager, Therapy Services, Department of Rehabilitation, Carle Foundation Hospital, 611 W Park St, Urbana, IL 61801 (USA)
2. SA Sahrmann, PT, PhD, FAPTA, is Professor of Physical Therapy/Neurology/Cell Biology & Physiology, Program in Physical Therapy, Washington University School of Medicine, St Louis, Mo
3. BJ Norton, PT, PhD, is Associate Professor of Physical Therapy and Neurology and Associate Director of Postprofessional Studies, Program in Physical Therapy, Washington University School of Medicine