1. Department of Physical Therapy and Rehabilitation Sciences, Drexel University, Philadelphia, PA, USA
2. School of Physical Therapy, Western University, London, Ontario, Canada
3. Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA
4. Department of Rehabilitation Sciences, The University of Oklahoma Health Sciences Centre, Oklahoma City, Oklahoma, USA
5. Department of Physical Therapy, Mercer University, Atlanta, GA, USA
6. Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada