1. Department of Health Sciences; Gettysburg College; Gettysburg Pennsylvania 17325
2. Department of Kinesiology; School of Public Health; University of Maryland; College Park Maryland 20742
3. Department of Biomedical Sciences; College of Veterinary Medicine; University of Missouri; Columbia Missouri 65211
4. Division of Gerontology and Geriatric Medicine; Department of Medicine; University of Maryland School of Medicine; Baltimore Maryland 21201
5. Baltimore Veterans Affairs Geriatric Research; Education and Clinical Center and Research and Development Service; Baltimore Maryland 21201