1. PQ McGinnis, PT, PhD, is Associate Professor of Physical Therapy, Richard Stockton College of New Jersey, PO Box 195, Pomona, NJ 08240 (USA).
2. LM Hack, PT, DPT, PhD, MBA, FAPTA, is Professor, Department of Physical Therapy, Temple University, Philadelphia, Pennsylvania.
3. K Nixon-Cave, PT, PhD, PCS, is Associate Professor, University of the Sciences in Philadelphia, and Physical Therapy Manager, Children's Hospital of Philadelphia.
4. SL Michlovitz, PT, PhD, CHT, is Adjunct Associate Professor, Department of Rehabilitation Medicine, Columbia University, New York, New York.