1. Division of Physical Medicine and Rehabilitation, Department of Orthopedics, University of Washington St. Louis , St. Louis, Missouri, USA
2. Department of Physical Medicine and Rehabilitation, University of Utah School of Medicine , Salt Lake City, Utah, USA
3. Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Alberta , Edmonton, Alberta, Canada
4. Central Alberta Pain and Rehabilitation Institute , Lacombe, Alberta, Canada
5. Vivo Cura Health , Calgary, Alberta, Canada