1. Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy
2. Pauley Heart Center, Virginia Commonwealth University, Richmond, VA 23223, USA
3. Fondazione Umbra Cuore e Ipertensione-ONLUS, 06100 Perugia, Italy
4. Division of Cardiology, Hospital S. Maria della Misericordia, 06100 Perugia, Italy
5. Department of Medicine and Technological Innovation (DiMIT), University of Insubria, 21100 Varese, Italy
6. Department of Medicine and Cardiopulmonary Rehabilitation, Maugeri Care and Research Institutes, IRCCS, 21049 Tradate, Italy