1. J. Schreiber, PT, PhD, Physical Therapy, Chatham University, Woodland Road, Pittsburgh, PA 15232 (USA).
2. G.F. Marchetti, PT, PhD, Physical Therapy, Duquesne University, Pittsburgh, Pennsylvania.
3. B. Racicot, PT, PCS, Physical Therapy, The Children's Institute of Pittsburgh, Pittsburgh, Pennsylvania.
4. E. Kaminski, PT, MPT, PCS, Physical Therapy, The Children's Institute of Pittsburgh.