1. Clinical Cardiology, IRCCS Policlinico San Donato , Via Morandi 30, 20097 San Donato Milanese, Milan , Italy
2. Azienda Ospedaliera San Camillo-Forlanini , Circonvallazione Gianicolense, 87, 00152 Rome , Italy
3. Department of Preventive Cardiology, Wroclaw Medical University , Wroclaw , Poland