1 Unit of Anesthesiology, Intensive Care and Pain Management, Department of Medicine, Campus Bio-Medico University, Rome, Italy.
2 Unit of Anesthesiology, Intensive Care and Pain Management, Department of Medicine, Campus Bio-Medico University, Rome, Italy - g.pascarella@unicampus.it.
3 Unit of Anesthesiology, Intensive Care and Pain Management, Humanitas Mater Domini, Castellanza, Varese, Italy.