1. Department of Anesthesia and Intensive Care, M Bufalini Hospital, Viale Ghirotti 285, 47521, Cesena, Italy
2. Department of Anesthesia and Intensive Care, University of Pisa, Via Piero Trivella, 56124, Pisa, Italy
3. Department of Internal Medicine, M Bufalini Hospital, Viale Ghirotti 285, 47521, Cesena, Italy
4. Department of Surgery, University of Pisa, Via Piero Trivella, 56124, Pisa, Italy, and
5. General, Emergency and Trauma Department, M Bufalini Hospital, Viale Ghirotti 285, 47521, Cesena, Italy