1. School of Nursing, University of Alabama at Birmingham, Birmingham, AL, USA
2. Division of Gerontology, Department of Medicine, Geriatrics, Palliative Care, University of Alabama at Birmingham, Birmingham, AL, USA
3. Division of Preventative Medicine, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
4. Division of Cardiovascular Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
5. Department of Medicine, Dell Medical School, University of Texas at Austin, Austin, TX, USA
6. Division of Gerontology, Geriatrics, and Palliative Care, Department of Medicine, School of Nursing, University of Alabama at Birmingham, Birmingham, AL, USA