1 From the Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD (N.P., S.P.C.); Department of Experimental Medicine, Universita' di Perugia, Italy (N.P.); Lewis Katz School of Medicine, Temple University, Philadelphia, PA (A.C.); and Fondazione IRCSS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Italy (N.M.). npaoloc1@jhmi.edu.
2 From the Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD (N.P., S.P.C.); Department of Experimental Medicine, Universita' di Perugia, Italy (N.P.); Lewis Katz School of Medicine, Temple University, Philadelphia, PA (A.C.); and Fondazione IRCSS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Italy (N.M.).