1. Department of Biomedical Sciences, Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048
2. Department of Medicine, University of California Los Angeles, Los Angeles, California 90095
3. Division of Geriatric Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
4. Denver Veterans Administration Medical Center, Geriatric Research Education and Clinical Center, Denver, Colorado 80220
5. Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, 8331150, Santiago, Chile
6. Advanced Center for Chronic Diseases and Center for Molecular Studies of the Cell, Universidad de Chile, Santiago 8380492, Chile
7. Instituto de Investigación en Ciencias Odontológicas, Facultad de Odontología, Universidad de Chile, Santiago 8380492, Chile
8. Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri 65211