[1] Univ Campania Luigi Vanvitelli, Dept Adv Med & Surg Sci, Naples, Italy
[2] Careggi Univ Hosp, Cardiomyopathy Unit, Florence, Italy
[3] Univ Pisa, Dept Surg Med & Mol Pathol & Crit Care Med, Pisa, Italy
[4] Univ Urbino, Dept Humanities, I-61029 Urbino, Italy
[5] Careggi Univ Hosp, Tuscan Reg Amyloidosis Ctr, Florence, Italy
[6] Careggi Univ Hosp, Internal Med Div 4, Florence, Italy
[7] Careggi Univ Hosp, Cardiothoracovasc Dept, Div Intervent Struct Cardiol, Florence, Italy
[8] Univ Florence, Dept Expt & Clin Med, Florence, Italy
[9] Meyer Children Hosp, Florence, Italy
[10] Univ Florence, Geriatr Intens Care Unit, Florence, Italy