1. IRCCS San Raffaele Scientific Institute, Milan, Italy
2. IRCCS San Raffaele Scientific Institute, Milan, Italy19Vita-Salute San Raffaele University, Milan, Italy
3. University Hospital of Pisa, Pisa, Italy
4. Mater Domini Hospital, Catanzaro, Italy
5. Ospedale Civile “Ca’ Foncello” di Treviso, Treviso, Italy
6. Siena Hospital, Siena, Italy
7. A. O. R. N. “Dei Colli,” Monaldi Hospital, Napoli, Italy
8. Mauriziano Hospital, Turin, Italy
9. S. Orsola-Malpighi University Hospital, Bologna, Italy
10. Città della Salute e della Scienza Hospital, University of Turin, Turin, Italy
11. Ospedale Civile “SS Annunziata,” Sassari, Italy
12. Ospedale Santa Maria della Misericordia, Perugia, Italy
13. Maria Cecilia Hospital–GVM Care and Research, Cotignola and Città di Lecce Hospital, Lecce, Italy
14. A. O. Regionale “San Carlo,” Potenza, Italy
15. Santa Maria della Misericordia University Hospital of Udine, Udine, Italy
16. Careggi University Hospital, Florence, Italy
17. A. O. Spedali Civili di Brescia, Brescia, Italy
18. A. O. Ospedali Riuniti Papardo-Piemonte, Messina, Italy
19. Australian and New Zealand Intensive Care Research Centre, Monash University School of Public Health and Preventive Medicine, Melbourne, Australia