[1] Skane Univ Hosp, Dept Neurol & Rehabil Med, S-22185 Lund, Sweden
[2] Skane Univ Hosp, Dept Intens & Perioperat Care, S-22185 Lund, Sweden
[3] Skane Univ Hosp, Ctr Res & Dev, Unit Med Stat & Epidemiol, S-22185 Lund, Sweden
[4] Lund Univ, Dept Clin Sci, Lund, Sweden
[5] Helsingborg Hosp, Dept Anesthesiol & Intens Care, Helsingborg, Sweden
[6] Univ Amsterdam, Acad Med Ctr, Dept Intens Care, NL-1105 AZ Amsterdam, Netherlands
[7] Rigshosp, Copenhagen Univ Hosp, Dept Cardiol, Ctr Heart, DK-2100 Copenhagen, Denmark
[8] Rigshosp, Copenhagen Univ Hosp, Copenhagen Trial Unit, Ctr Clin Intervent Res, DK-2100 Copenhagen, Denmark
[9] Rigshosp, Copenhagen Univ Hosp, Ctr Heart, Dept Cardiothorac Anesthesiol, DK-2100 Copenhagen, Denmark
[10] Santa Maria degli Angeli Hosp, Dept Anaesthesia Intens Care & Emergency Med Serv, Pordenone, Italy
[11] Univ Wales Hosp, Adult Crit Care, Cardiff CF4 4XW, S Glam, Wales
[12] Rijnstate Hosp, Dept Intens Care, Arnhem, Netherlands
[13] Univ Genoa, IRCCS San Martino IST, Dept Anaesthesia & Intens Care, I-16126 Genoa, Italy
[14] Univ London Imperial Coll Sci Technol & Med, Acad Unit Child & Adolescent Psychiat, London, England
[15] Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Sect Clin Neurosci & Rehabil Med, Gothenburg, Sweden
[16] Med Ctr Leeuwarden, Dept Intens Care, Leeuwarden, Netherlands
[17] Sahlgrens Univ Hosp, Dept Anesthesiol & Intens Care, Gothenburg, Sweden