1. S. Crandall, PT, DPT, Department of Physical Therapy & Athletic Training, College of Health & Rehabilitation Sciences: Sargent College, Boston University, Boston, Massachusetts.
2. S. Howlett, PT, DPT, ATC, Department of Physical Therapy & Athletic Training, College of Health & Rehabilitation Sciences: Sargent College, Boston University.
3. J.J. Keysor, PT, PhD, Center for Enhancing Activity and Participation Among Persons With Arthritis (ENACT), Department of Physical Therapy & Athletic Training, College of Health & Rehabilitation Sciences: Sargent College, Boston University, 635 Commonwealth Ave, Boston, MA 02215 (USA).