| Affiliation: | 1. Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA;2. Department of Medicine, Center for Health Services Research, Vanderbilt University School of Medicine, Nashville, TN 37232, USA;3. Geriatric Research, Education and Clinical Center (GRECC) Service, Department of Veterans Affairs Medical Center, Tennessee Valley Healthcare System, 1310 24th Avenue South, Nashville, TN 37212, USA;4. Department of Medicine, Center for Quality of Aging, Vanderbilt University School of Medicine, Nashville, TN 37232, USA |
