1. Fondazione Umbra Cuore e Ipertensione-ONLUS and Division of Cardiology, Hospital S. Maria della Misericordia, Perugia, Italy (P.V.).
2. Department of Medicine and Surgery, University of Insubria, Varese (F.A.).
3. Department of Medicine and Cardiopulmonary Rehabilitation, Maugeri Care and Research Institute, IRCCS Tradate, Italy (F.A.).
4. Division of Cardiology, Hospital S. Maria della Misericordia, Perugia, Italy (F.N.).
5. Department of Medicine, Centro di Ricerca Clinica e Traslazionale (CERICLET), University of Perugia, Italy (G.R.).