1. Section of Anesthesia, Intensive Care and Pain Medicine, Department of Emergency and Urgency, Città di Castello Hospital, Città di Castello, Via L. Angelini 10, 06012 Perugia, Italy
2. Section of Anesthesia and Intensive Care, AUSL Romagna, Local Health Authority, M. Bufalini Hospital, Viale Ghirotti 286, Cesena, Italy
3. Section of Anesthesia, Analgesia and Intensive Care, Department of Surgical and Biomedical Sciences, Santa Maria della Misericordia Hospital, Perugia, Italy
4. Section of Anesthesia, Intensive Care and Pain Medicine 1, Santa Maria della Misericordia Hospital, Perugia, Italy