1. SC Anestesia, Rianimazione e Terapia Intensiva, ASST Nord Milano, Ospedale Bassini, Cinisello Balsamo, 20097 Milan, Italy
2. Department of Intensive Care, New Hospital of Legnano (Ospedale Nuovo di Legnano), 20025 Legnano, Italy
3. Contenuto Ed Net Communications SL, 20131 Milan, Italy
4. Oncology Unit, ASST Bergamo Ovest, 20047 Treviglio, Italy
5. School of Medicine and Surgery, University of Milano-Bicocca, 20126 Milano, Italy
6. Anaesthesia and Intensive Care Department, Asst Gaetano Pini, 20100 Milano, Italy