1. Rehabilitation Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
2. Department of Physical Therapy, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
3. Department of Biostatistics, University of Alabama, Birmingham, AL, USA
4. Department of Psychology, University of Alabama, Birmingham, AL, USA
5. Division of Gerontology, Geriatrics, and Palliative Care, Department of Medicine, University of Alabama, Birmingham, AL, USA
6. Birmingham/Atlanta VA Geriatric Research Education and Clinical Center (GRECC), Birmingham VAMC, Birmingham, AL, USA
7. Department of Neurology, University of Alabama, Birmingham, AL, USA
8. Department of Physical Therapy, University of Alabama, Birmingham, AL, USA