1. VA Office of Health Equity, Washington, District of Columbia, USA.
2. Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA.
3. Kidney Medicine Section, Medical Service, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA.
4. Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
5. Department of Veterans Affairs, Palo Alto, California, USA.
6. Department of Medicine, Stanford University School of Medicine, Stanford, California, USA.
7. Nephrology Section, Department of Medicine, Yale School of Medicine, New Haven, Connecticut, USA.
8. VA Connecticut Healthcare System, West Haven, Connecticut, USA.
9. Health Services Research and Development, VA Puget Sound Health Care System, Seattle, Washington, USA.
10. Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, USA.
11. VA North Texas Health Care System, Dallas, Texas, USA.
12. Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA.
13. Department of Medical Ethics and Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
14. Analytics and Performance Integration (API), Office of Quality and Patient Safety, Veterans Health Administration, Washington, District of Columbia, USA.
15. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
16. VA National Pathology and Laboratory Medicine Service, Washington, District of Columbia, USA.
17. Department of Pathology, University of California San Diego School of Medicine, La Jolla, California, USA.
18. National VHA Diagnostics Office, Washington, District of Columbia, USA.
19. Iowa City VA Healthcare System, Iowa City, Iowa, USA.
20. Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.
21. VA Boston Healthcare System, Boston, Massachusetts, USA.
22. Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA.
23. Department of Veterans Affairs, New Jersey Health Care System, East Orange, New Jersey, USA.