1. School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Monza-Brianza, Italy
2. Acute Geriatric Unit, S. Gerardo Hospital, 20900 Monza, Monza-Brianza, Italy
3. Cardiology Service C.M.S.R. Veneto Medica, Altavilla Vicentina, 36077 Vicenza, Italy