1. School of Physical and Occupational Therapy, Faculty of Medicine and Health Sciences McGill University Montreal Quebec Canada
2. Dalla Lana School of Public Health University of Toronto Toronto Ontario Canada
3. Avery Information Services Ltd. Ontario Canada
4. Department of Physical Therapy and Rehabilitation Science Drexel University Philadelphia USA
5. CanChild Centre for Childhood Disability Research Hamilton Ontario Canada
6. Department of Rehabilitation, Physical Therapy Science and Sports University Medical Center Utrecht Utrecht the Netherlands