[1] Azienda Osped Careggi, Dept Internal Med, Florence, Italy
[2] Univ Turin, Dept Internal Med, Turin, Italy
[3] Azienda Osped Careggi, Unit Endocrinol, Florence, Italy
[4] Univ Florence, Dept Crit Care, Florence, Italy
[5] Univ Palermo, Dept Clin Med & Emergent Dis, Palermo, Italy