[1] IRCCS Fdn G Pascale, Ist Nazl Tumori, Div Anesthesia & Pain Med, I-80131 Naples, Italy
[2] San Salvatore Acad Hosp LAquila, Dept Anesthesia, Laquila, Italy
[3] Univ LAquila, Dept Anesthesiol Intens Care & Pain Treatment, Piazzale Salvatore Tommasi 1, I-67100 Coppito, Italy
[4] Osped Pediat Bambino Gesu IRCCS, Dept Anesthesia & Crit Care, ARCO ROMA, Piazza S Onofrio 4, I-00165 Rome, Italy