[1] Western Univ, Sch Phys Therapy, 1588 Elborn Coll, London, ON N6G 1H1, Canada
[2] Univ Washington, Dept Rehabil Med, Seattle, WA 98195 USA
[3] Drexel Univ, Dept Phys Therapy & Rehabil Sci, Philadelphia, PA 19104 USA
[4] Avery Informat Serv, Orillia, ON, Canada
[5] McMaster Univ, CanChild Ctr Childhood Disabil Res, Hamilton, ON, Canada