[1] Univ Florence, Dept Hlth Sci, I-50134 Florence, Italy
[2] Meyer Childrens Hosp, Neurosci Neurosurg, I-50139 Florence, Italy
[3] Careggi Univ Hosp, Emergency & Trauma Intens Care Unit, I-50134 Florence, Italy
[4] Careggi Univ Hosp, Med & Surg Intens Care Unit, I-50134 Florence, Italy
[5] Careggi Univ Hosp, Emergency Dept, I-50134 Florence, Italy
[6] Emergency Med Syst AUSL Toscana Ctr, I-50122 Florence, Italy
[7] Univ Florence, Dept Expt & Clin Med, I-50121 Florence, Italy
[8] Careggi Univ Hosp, Hosp Healthcare Management, I-50134 Florence, Italy
[9] Univ Suffolk, Sch Hlth & Sports Sci, Ipswich IP4 1QJ, England
[10] Milano Bicocca Univ, San Gerardo Hosp ASST Monza, Gen Intens Care Unit, I-20900 Monza, Italy