1. Vanderbilt University School of Medicine, Nashville, Tennessee
2. Geriatric Research Education Clinical Center, VA Tennessee Valley, Nashville
3. Northwestern University-Feinberg School of Medicine
4. Rush University School of Medicine
5. John H. Stroger, Jr. Hospital of Cook County, Chicago, Illinois
6. Emory University School of Medicine, Atlanta, Georgia
7. University of Tennessee Health Science Center/Saint Thomas Health, Nashville
8. University of Utah School of Medicine, Salt Lake City
9. Centers for Disease Control and Prevention, Atlanta, Georgia