1. JM Rothstein, PT, PhD, FAPTA, is Professor, Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, 1919 W Taylor St, 4th Fl, Room 456, Chicago, IL 60612
2. JL Echternach, PT, EdD, ECS, FAPTA, is Professor and Eminent Scholar, School of Physical Therapy, Old Dominion University, Norfolk, Va
3. DL Riddle, PT, PhD, is Professor, Department of Physical Therapy, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Va