1. X. Liu, PhD, Department of Health Management and Informatics, University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816-2205 (USA).
2. W.J. Hanney, PT, PhD, Department of Health Professions, University of Central Florida.
3. M. Masaracchio, PT, PhD, Department of Physical Therapy, Long Island University, Brooklyn, New York.
4. M.J. Kolber, PT, PhD, Department of Physical Therapy, Nova Southeastern University, Fort Lauderdale, Florida.