1. Department of Rehabilitation Medicine University of Washington Seattle WAUSA
2. Department of Physical Therapy and Rehabilitation Sciences Drexel University Philadelphia PA USA
3. Avery Information Services Orillia Ontario Canada
4. Department of Rehabilitation Sciences University of Oklahoma Health Sciences Center Oklahoma City OKUSA
5. Department of Physical Therapy Mercer University Atlanta GA USA
6. Department of Health Research Methods, Evidence and Impact McMaster University Hamilton Ontario Canada