1. Seattle, WA
2. RR&D Center of Excellence for Limb Loss Prevention and Prosthetic Engineering
3. Orthopaedics and Sports Medicine,
4. Mechanical Engineering
5. Department of Veterans Affairs
6. Research and Development Service
7. Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA
8. ¶ General Internal Medicine Section, Epidemiologic Research and Information Center, VA Puget Sound Health Care System, Seattle WA Departments of