[1] Univ Libre Bruxelles, Erasme Univ Hosp, Dept Intens Care, B-1070 Brussels, Belgium
[2] Gelderse Vallei Hosp, Dept Intens Care, NL-6716 RP Ede Gld, Netherlands
[3] CHUV BH, Serv Med Intens Adulte & Brules, CH-1011 Lausanne, Switzerland
[4] Univ Trieste, Dept Med Surg & Hlth Sci, Clin Med AOUTS, I-34142 Trieste, Italy
[5] Univ Hosp Leuven UZ Leuven, Dept & Lab Intens Care Med, B-3000 Leuven, Belgium
[6] Univ Sydney, Northern Clin Sch, Intens Care Res Unit, St Leonards, NSW 2065, Australia
[7] Univ Liverpool, Dept Med, Liverpool L69 3BX, Merseyside, England
[8] Kingston Gen Hosp, Clin Evaluat Res Unit, Kingston, ON K7L 2V7, Canada
[9] Med Univ Vienna, Div Cardiac Thorac Vasc Anesthesia & Intens Care, A-1090 Vienna, Austria
[10] Univ Milan, Dept Anesthesiol & Intens Care, I-20142 Milan, Italy
[11] Univ Roma La Sapienza, Dept Clin Med, I-00185 Rome, Italy
[12] Univ Hosp Geneva, Dept Nutr, CH-1211 Geneva, Switzerland
[13] Beilison Hosp, Dept Intens Care, IL-49100 Petah Tiqwa, Israel
[14] Karolinska Univ Hosp, Dept Anesthesiol & Intens Care Med, S-14186 Stockholm, Sweden
[15] Univ Colorado, Sch Med, Dept Anesthesiol, Aurora, CO USA