[1] Univ Cattolica Sacro Cuore, Dept Intens Care & Anesthesiol, Policlin Univ A Gemelli, I-00168 Rome, Italy
[2] St Louis Hosp, Intens Care Med Unit, Paris, France
[3] Univ Med Ctr Utrecht, Dept Med Microbiol, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[4] Hop La Pitie Salpetriere, Paris, France
[5] Osped San Gerardo, Neurointens Care Unit, Monza, Italy
[6] Free Univ Brussels, Erasme Hosp, Serv Soins Intensifs, B-1050 Brussels, Belgium
[7] Vivantes Klinikum Neukoelln, Dept Anesthesiol, Berlin, Germany
[8] Uppsala Univ, Dept Clin Physiol, Uppsala, Sweden
[9] Med Univ Innsbruck, Dept Internal Med, Innsbruck, Austria
[10] Royal Brompton Hosp, Pediat Intens Care Unit, London SW3 6LY, England
[11] Univ Toronto, Interdept Div Crit Care Med, Toronto, ON, Canada
[12] Karolinska Univ Hosp, Dept Anesthesiol, Stockholm, Sweden
[13] Karolinska Univ Hosp, Dept Intens Care Med, Stockholm, Sweden
[14] Univ Hosp Geneva, Intens Care Med Unit, Geneva, Switzerland
[15] Erasme Univ Hosp, Dept Intens Care, B-1070 Brussels, Belgium
[16] Lariboisiere Hosp, Dept Anesthesiol & Crit Care Med, Paris, France
[17] Hop St Pau, Intens Care Med Unit, Barcelona, Spain