[1] Natl Publ Hlth Org, Athens, Greece
[2] Aix Marseille Univ, Hop Nord, Assistance Publ Hop Univ Marseille, Serv Anesthesie & Reanimat, Marseille, France
[3] Erasmus MC Univ Med Ctr, Dept Intens Care, Rotterdam, Netherlands
[4] Hosp Univ Vall dHebron, Intens Care Dept, Barcelona, Spain
[5] Univ Brighton, Sch Educ Sport & Hlth Sci, Brighton, England
[6] Guys & St Thomas Hosp, Dept Crit Care, London, England
[7] Univ Ferrara, Dept Translat Med, Ferrara, Italy
[8] Radboud Univ Nijmegen Med Ctr, Nijmegen, Netherlands
[9] Hosp Univ Fdn Jimenez Diaz, Madrid, Spain
[10] Gen Hosp Attiki KAT, Athens, Greece
[11] European Soc Intens Care Med, Brussels, Belgium
[12] Ghent Univ Hosp, Dept Intens Care Med, Ghent, Belgium
[13] Univ London, London, England
[14] Univ Autonoma Barcelona, VHIR Med Dept, SODIR Res Grp, Barcelona, Spain
[15] Kings Coll London, London, England
[16] Azienda Osped Univ St Anna, Dept Emergency, Ferrara, Italy
[17] Natl & Kapodistrian Univ Athens, Med Sch, Athens, Greece
[18] Univ Ghent, Fac Med & Hlth Sci, Dept Internal Med & Pediat, Ghent, Belgium