1. Cardiovascular Department; Azienda Ospedaliera ‘Ospedali Riuniti’ and University of Trieste; Trieste Italy
2. Cardiovascular Center; Azienda per i Servizi Sanitari No. 1; Trieste Italy
3. Department of Environmental Medicine and Public Health; University of Padova; Padova Italy
4. Cardiovascular Institute; University of Colorado; Denver CO USA