1. From the Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI (A.R.T.); the Department of Medicine, Newton–Wellesley Hospital, Newton, MA (E.L.B.); and the Departments of Radiology (K.A.B.) and Pathology (M.M.-L.), Massachusetts General Hospital, the Department of Medicine, Brigham and Women’s Hospital (F.M.M.), and the Departments of Radiology (K.A.B.), Medicine (F.M.M.), and Pathology (M.M.-L.), Harvard Medical School — all in Boston.