1 Anesthesia and Intensive Care Unit, AUSL Romagna, M. Bufalini Hospital, Viale Ghirotti 286, 47521 Cesena, Italy. Electronic address: domenicopietro.santonastaso@auslromagna.it.
2 Anesthesia and Intensive Care Unit, AUSL Romagna, M. Bufalini Hospital, Viale Ghirotti 286, 47521 Cesena, Italy. Electronic address: annabella.dechiara@auslromagna.it.
3 Anesthesia and Intensive Care Unit, AUSL Romagna, M. Bufalini Hospital, Viale Ghirotti 286, 47521 Cesena, Italy.
4 Section of Anesthesia and Intensive Care Unit, Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136 Bologna, Italy. Electronic address: andrea.tognu@ior.it.
5 Anesthesia and Intensive Care Unit, AUSL Romagna, M. Bufalini Hospital, Viale Ghirotti 286, 47521 Cesena, Italy. Electronic address: costanza.martino@auslromagna.it.
6 Anesthesia and Intensive Care Unit, AUSL Romagna, M. Bufalini Hospital, Viale Ghirotti 286, 47521 Cesena, Italy. Electronic address: vanni.agnoletti@auslromagna.it.