1. Department of Medicine and Surgery, University of Insubria, Varese, Italy
2. Fondazione Umbra Cuore E Ipertensione-ONLUS and Division of Cardiology, Hospital S. Maria Della Misericordia, Perugia, Italy
3. Department of Medicine and Cardiopulmonary Rehabilitation, Maugeri Care and Research Institutes, IRCCS, Tradate, Varese, Italy