[1] Department of Intensive Care,
[2] Erasme University Hospital,undefined
[3] Route de Lennik 808,undefined
[4] 1070 Brussels,undefined
[5] Belgium e-mail: jlvincen@ulb.ac.be Tel.: + 32-2-5 55 33 80 Fax: + 32-2-5 55 45 55,undefined
[6] Dept of Surgery Int. Care,undefined
[7] Hopital Cantonal Universitaire,undefined
[8] 24 rue Micheli- du-Crest,undefined
[9] 1211 Geneve 14,undefined
[10] Switzerland,undefined
[11] Dept of Intensive Care,undefined
[12] S. Antonio Capuchos Hospital,undefined
[13] Al. St. Antonio Capuchos,undefined
[14] 1150 Lisboa,undefined
[15] Portugal,undefined
[16] Dept of Anaesthesiology,undefined
[17] Leeds General Infirmary,undefined
[18] Great George Street,undefined
[19] Leeds LS1 3EX,undefined
[20] UK,undefined
[21] Dept of Anesthesiology and Intensive care,undefined
[22] Universita “La Sapienza”,undefined
[23] Policlinico Umberto I,undefined
[24] 00161 Roma,undefined
[25] Italy,undefined
[26] Dept of Intensive care,undefined
[27] University Hospital of Bern,undefined
[28] 3010 Bern,undefined
[29] Switzerland,undefined
[30] Dept of Anesthesiology,undefined
[31] Hadassah Univ. Med. Center,undefined
[32] 91120 Jerusalem,undefined
[33] Israel,undefined
[34] Faculty of Medicine,undefined
[35] Free University of Brussels,undefined
[36] Route de Lennik 808,undefined
[37] 1070 Brussels,undefined
[38] Belgium,undefined