1. Section of Geriatric Medicine, Division of Primary Care and Population Health, Stanford University School of Medicine, Stanford, California
2. Geriatric Research and Education Clinical Center, Veteran Affairs Palo Alto Health Care System, Palo Alto, California
3. Nutrition Exercise Physiology and Sarcopenia Team, Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
4. Division of Nephrology, Tufts Medical Center, Boston, Massachusetts
5. Geriatric Research Education and Clinical Center, Veterans Affairs Maryland Healthcare System, Baltimore, Maryland
6. Division of Gerontology, Geriatrics, and Palliative Medicine, University of Maryland School of Medicine, Baltimore, Maryland
7. Division of Nephrology, University of Maryland School of Medicine, Baltimore, Maryland