1. From the Divisions of Cardiology (P.A.L., U.C., E.E., P.G.) and Pulmonary Disease (A.B.), Fondazione Salvatore Maugeri IRCCS, Veruno, Italy, and the Divisions of Cardiovascular Diseases and Hypertension, Mayo Clinic, Rochester, Minn (P.A.L., V.K.S.).