1. From Thoracic Aortic Center (E.M.I., M.A., M.E.L.), Cardiology Division, Department of Medicine (E.M.I., M.E.L.), Cardiovascular Research Center (M.A., M.E.L.), and Pediatric Cardiology Division, Department of Pediatrics (M.E.L.), Massachusetts General Hospital and Harvard Medical School, Boston, MA; Brigham and Women’s Hospital, Cardiology Division, Boston, MA (M.P.B.); Cardiac Surgery Department, University Hospital S. Orsola, Bologna, Italy (M.D.E.); Cardiovascular Center (J.F., D.M., K.E.) and...