1. Department of Epidemiology; Johns Hopkins University; Baltimore Maryland
2. Center on Aging and Health; Johns Hopkins University; Baltimore Maryland
3. Department of Medicine; School of Medicine, Yale University; New Haven Connecticut
4. Department of Health and Exercise Science; Wake Forest University; Winston-Salem North Carolina
5. Department of Biostatistical Sciences; School of Medicine, Wake Forest University; Winston-Salem North Carolina
6. Department of Epidemiology; College of Public Health and Health Professions and College of Medicine, University of Florida; Gainesville Florida
7. Department of Clinical and Health Psychology; University of Florida; Gainesville Florida
8. Department of Epidemiology; University of Pittsburgh; Pittsburgh Pennsylvania
9. Department of Health Research and Policy; School of Medicine, Stanford University; Stanford California
10. Department of Medicine; School of Medicine, Stanford University; Stanford California
11. Population and Public Health; Pennington Biomedical Research Center; Baton Rouge Louisiana
12. Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging; Tufts University; Boston Massachusetts
13. Department of Aging and Geriatric Research; University of Florida; Gainesville Florida