1. Physical Therapy Program, Department of Physical Medicine and Rehabilitation, University of Colorado , Aurora, Colorado , USA
2. VA Eastern Colorado Geriatric Research, Education, and Clinical Center (GRECC), VA Eastern Colorado Health Care System , Aurora, Colorado , USA
3. Department of Physical Therapy, University of Delaware , Newark, Delaware , USA
4. Department of Family Medicine, University of Colorado , Aurora, Colorado , USA
5. Adult and Child Center for Outcomes Research and Delivery (ACCORDS), University of Colorado , Aurora, Colorado , USA
6. Department of Physical Medicine and Rehabilitation, University of Colorado , Aurora, Colorado , USA
7. VA Rocky Mountain Mental Illness Research Education and Clinical Center , Aurora, Colorado , USA
8. Aegis Therapies , Fort Smith, Arkansas , USA
9. Center for Care Delivery and Outcomes Research, Minneapolis Veterans Affairs Health Care System , Minneapolis, Minnesota , USA
10. Department of Medicine, University of Minnesota , Minneapolis, Minnesota , USA