1. M.D. Westby, PT, PhD, School of Public Health, University of Alberta, c/o Arthritis Research Canada, 5591 No. 3 Rd, Richmond, British Columbia, Canada V6X 2C7.
2. A. Klemm, BKin, Department of Physical Therapy, University of British Columbia, Vancouver, British Columbia, Canada.
3. L.C. Li, PT, PhD, Department of Physical Therapy, University of British Columbia.
4. C.A. Jones, PT, PhD, Department of Physical Therapy, University of Alberta, Edmonton, Alberta, Canada.