1 Section of Cardiovascular Disease, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy.
2 Section of Cardiovascular Disease, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy; Pneumology Unit, Cardio-Thoracic Department, Spedali Civili od Brescia, Brescia, Italy.