[1] Fdn IRCCS Ca Granda Osped Maggiore Policlin, Milan, Italy
[2] Osped Maggiore Policlin, Dipartimento Anestesia Rianimaz & Emergenza Urgen, Milan, Italy
[3] McGill Univ, Montreal, PQ, Canada
[4] Univ Milano Bicocca, Milan, Italy
[5] Univ Milan, Milan, Italy
[6] Univ Ferrara, Ferrara, Italy
[7] Univ Milano Bicocca, Monza, Italy
[8] Univ Padua, Padua, Italy
[9] Hosp Lubijana, Lubijana, Slovenia
[10] Univ Genoa, Genoa, Italy
[11] St Pau Hosp, Barcelona, Spain
[12] St Michaels Hosp, Crit Care Med Dept, Toronto, ON, Canada
[13] Maggiore Policlin Hosp, Vecla ICU, Milan, Italy