1. Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts (C.C.S.)
2. University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (T.B.)
3. Department of Medicine, University of California, San Francisco, School of Medicine, San Francisco, California (R.B.)
4. Department of Medicine, Johns Hopkins Hospital, Johns Hopkins University School of Medicine, Baltimore, Maryland (N.C.)
5. Department of Medicine, University of Washington School of Medicine, Seattle, Washington (K.P.S.)
6. Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts (M.Y.)
7. Department of Medicine, Duke University School of Medicine, Durham, North Carolina (A.Z.)
8. Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts (N.D.)
9. Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts (J.T.K.)