1. Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
2. Department of Medicine, Center for Outcomes and Effectiveness Research and Education, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
3. Department of Medicine, Lung Health Center, University of Alabama at Birmingham, Birmingham, Alabama.
4. Department of Medicine, Division of Gerontology, Geriatrics, and Palliative Care, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
5. Department of Medicine, School of Nursing, University of Alabama at Birmingham, Birmingham, Alabama.
6. Brookdale Department of Geriatrics and Palliative Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.
7. Department of Medicine, Birmingham Veterans Affairs Medical Center, Birmingham, Alabama.