1. Senior Health Scientist, Health Services Research and Development, Department of Veterans Affairs Hospital, Hines, Illinois.
2. Research Assistant, Midwest Health Services Research and Development Field Program, Department of Veterans Affairs Hospital, Hines, Illinois.
3. Professor, Department of Orthopaedic Surgery, Loyola University Medical School, Director Special Teams for Amputations, Mobility, Prosthetics/Orthotics (STAMP), Department of Veterans Affairs Hospital, Hines, Illinois.