1. Cardiovascular Program-ICCC, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau) , Sant Antoni Mª Claret 167, 08025 Barcelona , Spain
2. Centro de Investigación Biomédica en Red Cardiovascular (CIBERCV), Instituto de Salud Carlos III , Madrid , Spain
3. Laboratory of Epidemiological and Clinical Cardiology, Department of Medical and Surgical Sciences, University of Bologna , Bologna , Italy
4. First Department of Cardiology, National and Kapodistrian University of Athens, Greece