1 Department of Biopathology and Medical Biotechnologies (DIBIMED), Section of Anesthesia, Analgesia, Intensive Care and Emergency. Policlinico P. Giaccone, University of Palermo, Palermo, Via del vespro 129, Palermo, 90147, Italy.
2 Department of Anesthesiology, Perioperative Care and Intensive Care, "S.S. Annunziata" Hospital, "Gabriele d'Annunzio" University of Chieti-Pescara, Chieti, Italy.