1. Department of Medicine, Section of Cardiology, University of Verona, P.le Stefani 1, 37126 Verona, Italy
2. Department of Cardiovascular Disease, Mayo Clinic, 200 1st St SW, Rochester, MN 55902, Stati Uniti, USA
3. Institut Universitaire de Cardiologie et de Pneumologie, Québec Heart & Lung Institute, Université Laval, Québec, 2725 chemin Ste-Foy, #A-2047, Québec (QC) G1V 4G5, Canada
4. Cardiology Service, C.M.S.R. Veneto Medica, Via Vicenza n.204, Altavilla Vicentina (VI), 36077, Italy