1. M. Fortin, BSc, CAT(C), PhD Candidate, Common Spinal Disorders Research Group, Faculty of Rehabilitation Medicine, University of Alberta, 3-48 Corbett Hall, Edmonton, Alberta, Canada T6G 2G4.
2. L.G. Macedo, PhD, Department of Physical Therapy, Common Spinal Disorders Research Group, Faculty of Rehabilitation Medicine, University of Alberta.