1. 2nd Department of Anesthesia and Intensive Care, Medical University of Warsaw, Warsaw, Poland.
2. Department of Critical Care, King’s College Hospital, London, United Kingdom.
3. Department of Anaesthesia and Intensive Care, A.O.U. Policlinico-San Marco, Catania, Italy.
4. Department of General Surgery and Medico-Surgical Specialties, School of Anaesthesia and Intensive Care, University of Catania, Catania, Italy.
5. Department of Perioperative Medicine, St Bartholomew’s Hospital, London, United Kingdom.
6. Department of Medical and Surgical Sciences, School of Specialization in Anesthesia and Intensive Care, University “Magna Graecia,” Catanzaro, Italy.