[1] Univ Modena & Reggio Emilia, Intens Care Unit, Dept Anesthesiol, I-41124 Modena, Italy
[2] Univ Modena & Reggio Emilia, Intens Care Unit, Dept Surg, I-41124 Modena, Italy
[3] Univ Modena & Reggio Emilia, Intens Care Unit, Dept Life Sci, I-41124 Modena, Italy