N Engl J Med 2014 Jun;370(24):2276-85
From the Veterans Affairs Boston Healthcare System (D.J.G., D.L.B.), Brigham and Women's Hospital (D.J.G., S.R.P., S.F.Q., M.R., E.F.L., D.L.B., S.R.), Harvard Medical School (D.J.G., S.R.P., S.F.Q., E.F.L., D.L.B., S.R.), Boston University School of Medicine (D.J.G.), and Beth Israel Deaconess Medical Center (S.R.P., S.R.) - all in Boston; Johns Hopkins University, Baltimore (N.M.P., R.S.B.); Cleveland Clinic (R.M.) and Case Western Reserve University (R.M., D.C.B.) - both in Cleveland; and the University of Vermont, Colchester (R.P.T.).