1. Department of Physical Therapy, School of Pharmacy and Health Professions Creighton University Omaha Nebraska USA
2. RTI International, Technology Advancement and Commercialization Research Triangle Park North Carolina USA
3. Geriatric Research Education and Clinical Center, VA Eastern Colorado Healthcare System Denver Colorado USA
4. Department of Physical Medicine and Rehabilitation University of Colorado Aurora Colorado USA
5. Department of Physical Therapy High Point University High Point North Carolina USA
6. Department of Biostatistics and Informatics University of Colorado Anschutz Medical Campus Denver Colorado USA
7. Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine University of Colorado Aurora Colorado USA
8. Division of Geriatric Medicine, Department of Medicine University of Colorado Aurora Colorado USA