1. Department of Medicine, VA Boston Healthcare System, Boston, Massachusetts
2. VA Center for Healthcare Organization and Implementation Research (CHOIR), Boston, Massachusetts
3. Harvard Medical School, Boston, Massachusetts
4. Department of Surgery, VA Boston Healthcare System, Boston, Massachusetts
5. Boston University School of Medicine, Boston, Massachusetts
6. Division of Nephrology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
7. Duke Clinical Research Institute (DCRI), Durham, North Carolina