1. 1st Service of Anesthesia and Intensive Care; Ospedali Riuniti di Bergamo; Bergamo; Italy
2. Department of Anesthesia and Intensive Care; Anadolu Medical Center; Kocaeli; Turkey
3. Department of Anesthesia and Intensive Care; San Gerardo Hospital; Monza; Italy
4. Department of Experimental Medicine; Milan Bicocca University; Milan; Italy
5. Department of Paediatric Anesthesia and Pain Management; Royal Children's Hospital; Anesthesia Research Unit; Murdoch Children's Research Institute; Melbourne; Vic.; Australia