1. RR Utzman, PT, MPH, PhD, is Associate Professor and Academic Coordinator of Clinical Education, Division of Physical Therapy, West Virginia University School of Medicine, PO Box 9226, Morgantown, WV 26506-9226 (USA)
2. DL Riddle, PT, PhD, FAPTA, is Otto D Payton Professor, Department of Physical Therapy, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Va
3. DV Jewell, PT, PhD, CCS, FAACVPR, is Assistant Professor, Department of Physical Therapy, Medical College of Virginia Campus, Virginia Commonwealth University