1. J.E. Graham, PhD, DC, is Assistant Professor, Division of Rehabilitation Sciences, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555-1137 (USA).
2. S.R. Fisher, PT, PhD, is Assistant Professor, Division of Rehabilitation Sciences, University of Texas Medical Branch.
3. I.-M. Bergés, PhD, is Assistant Professor, Division of Rehabilitation Sciences, University of Texas Medical Branch.
4. Y.-F. Kuo, PhD, is Associate Professor, Department of Internal Medicine–Geriatrics, University of Texas Medical Branch.
5. G.V. Ostir, PhD, is Professor, Department of Internal Medicine–Geriatrics, University of Texas Medical Branch.