1. Division of Cardiology; Duke University Medical Center; Durham NC USA
2. Ahmanson-UCLA Cardiomyopathy Center; University of California Los Angeles; Los Angeles CA USA
3. Division of Cardiology; Brigham and Women's Hospital; Boston MA USA
4. Center for Cardiovascular Innovation; Northwestern University Feinberg School of Medicine; Chicago IL USA
5. Associazione Nazionale Medici Cardiologi Ospedalieri Research Center; Florence Italy
6. Klinik für Innere Medizin III; Universitätsklinikum des Saarlandes; Homburg Germany
7. INSERM, CHRU Nancy, Université de Lorraine; Centre d'Investigation Clinique CIC1433; F54000 Nancy France
8. Division of Cardiology; Stony Brook University; Stony Brook NY USA