1. Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Toronto, ON, Canada
2. Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
3. Rehabilitation Sciences Institute, University of Toronto, Toronto, ON, Canada
4. Holland Bloorview Kids Rehabilitation Hospital, Toronto, ON, Canada
5. Indiana University School of Medicine, Riley Hospital for Children Indiana University Health, Indianapolis, IN, USA
6. National Center on Health, Physical Activity and Disability, University of Alabama at Birmingham/Lakeshore Research Collaborative, Birmingham, AL, USA