1 Department of Biopathology and Medical Biotechnologies, Section of Anaesthesia, Analgesia, Intensive Care and Emergency, University Hospital P. Giaccone, University of Palermo, Palermo, Italy. Electronic address: vinrussotto@gmail.com.
2 Department of Biopathology and Medical Biotechnologies, Section of Anaesthesia, Analgesia, Intensive Care and Emergency, University Hospital P. Giaccone, University of Palermo, Palermo, Italy.