1. A.J. Kittelson, PT, DPT, Rehabilitation Science, Graduate School, University of Colorado, Mail Stop C244, 13121 E 17th Ave, Room 3116, Aurora, CO 80045 (USA).
2. S.Z. George, PT, PhD, Department of Physical Therapy, University of Florida, Gainesville, Florida, and Brooks Rehabilitation, Jacksonville, Florida.
3. K.S. Maluf, PT, PhD, Physical Therapy and Rehabilitation Science Programs, Department of Physical Medicine and Rehabilitation, University of Colorado.
4. J.E. Stevens-Lapsley, PT, PhD, Physical Therapy Program, Department of Physical Medicine and Rehabilitation, University of Colorado.