[1] Careggi Univ Hosp AOUC, Dept Expt & Clin Med, Florence, Italy
[2] Careggi Univ Hosp AOUC, Unit Geriatr, Dept Med & Geriatr, Florence, Italy
[3] Careggi Univ Hosp AOUC, Cardiac Surg Unit, Cardiothorac Vasc Dept, Florence, Italy
[4] Careggi Univ Hosp AOUC, Gen Cardiol, Cardiothorac Vasc Dept, Florence, Italy
[5] Careggi Univ Hosp AOUC, Cardiac Anesthesiol Unit, Cardiothorac Vasc Dept, Florence, Italy
[6] Univ Florence, Florence, Italy