1. Division of Infectious Diseases, Department of Medicine, Duke University, Durham, North Carolina.
2. Department of Biostatistics and Bioinformatics, Duke University, Durham, North Carolina.
3. Department of Internal Medicine, Salem Veterans Affairs Medical Center, Salem, Virginia.
4. Department of Medicine, Virginia Tech Carilion School of Medicine, Roanoke, Virginia.
5. Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey.
6. Department of Internal Medicine, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut.
7. Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut.
8. Department of Medicine, University of Washington School of Medicine, Seattle, Washington.
9. Washington DC Veterans Affairs Medical Center, Washington, District of Columbia.
10. George Washington University School of Medicine and Health Sciences, Washington, District of Columbia.
11. Department of Psychology, George Washington University, Washington, District of Columbia.
12. Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut.
13. Yale School of Nursing, New Haven, Connecticut.
14. Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina.