[1] Univ Zurich, Inst Anasthesiol, Raemistr 100, CH-8091 Zurich, Switzerland
[2] Univ Hosp Zurich, Raemistr 100, CH-8091 Zurich, Switzerland
[3] Univ Witten Herdecke, Dept Trauma & Orthopaed Surg, CMMC, Ostmerheimer Str 200, D-51109 Cologne, Germany
[4] Univ JE Purkyne, Masaryk Hosp, Dept Anaesthesiol Perioperat Med & Intens Care, Socialni Pece 3316-12A, CZ-40113 Usti Nad Labem, Czech Republic
[5] Univ Hosp Hradec Kralove, Ctr Res & Dev, Sokolska 581, CZ-50005 Hradec Kralove, Czech Republic
[6] Charles Univ Prague, Fac Med Hradec Kralove, Dept Anaesthesiol & Intens Care Med, Simkova 870, CZ-50003 Hradec Kralove, Czech Republic
[7] Dalhousie Univ, Dept Anaesthesia Pain Management & Perioperat Med, QE II Hlth Sci Ctr, 10 West Victoria,1276 South Pk St, Halifax, NS B3H 2Y9, Canada
[8] Univ Paris XI Faculte, Hop Univ Paris Sud, Dept Anaesthesia & Intens Care, Fac Med Paris Sud, 78 Rue Gen Leclerc, F-94275 Le Kremlin Bicetre, France
[9] CC Iliescu Emergency Inst Cardiovasc Dis, Dept Cardiac Anaesthesia & Intens Care, Sos Fundeni 256-258, RO-022328 Bucharest, Romania
[10] Kings Coll London, Westminster Bridge Rd, London SE1 7EH, England
[11] Guys & St Thomas NHS Fdn Trust, Dept Haematol, Westminster Bridge Rd, London SE1 7EH, England
[12] Guys & St Thomas NHS Fdn Trust, Dept Pathol, Westminster Bridge Rd, London SE1 7EH, England
[13] Univ Ljubljana, Dept Traumatol, Gen & Teaching Hosp Celje, Fac Med, SI-3000 Celje, Slovenia
[14] Univ Witten Herdecke, Dept Trauma & Orthopaed Surg, CMMC, Inst Res Operat Med IFOM, Ostmerheimer Str 200, D-51109 Cologne, Germany
[15] AUSL Romagna, Infermi Hosp Rimini, Dept Anesthesia, Viale Settembrini 2, I-47924 Rimini, Italy
[16] AUSL Romagna, Infermi Hosp Rimini, ICU, Viale Settembrini 2, I-47924 Rimini, Italy
[17] Karolinska Univ Hosp, Dept Surg & Trauma, S-17176 Solna, Sweden
[18] Hotel Dieu Univ Hosp, 1 Pl Parvis Notre Dame, F-75181 Paris 04, France
[19] Univ Libre Bruxelles, Erasme Univ Hosp, Dept Intens Care, Route Lennik 808, B-1070 Brussels, Belgium
[20] Rhein Westfal TH Aachen, Univ Hosp Aachen, Dept Anesthesiol, Pauwelsstr 30, D-52074 Aachen, Germany