1. University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
2. Augusta University, Augusta, Georgia, USA
3. Western Carolina University, Cullowhee, North Carolina, USA
4. Tivity Health, Franklin, Tennessee, USA
5. University of Pittsburgh, Pittsburgh, Pennsylvania, USA
6. Center for Healthy Aging, National Council on Aging, Arlington, Virginia, USA
7. Kathy Shirley Physical Therapy and Wellness Services, Jacksonville Beach, Florida, USA
8. Genesis Rehabilitation Services, Kennett Square, Pennsylvania, USA
9. Relias, Morrisville, North Carolina, USA