[1] Bern Univ, Bern Univ Hosp, Intens Care Med, Inselspital, Bern, Switzerland
[2] Cantonal Hosp St Gallen, Dept Operat Intens Care Med, St Gallen, Switzerland
[3] Univ Hosp Basel, Dept Acute Med, Intens Care Unit, Basel, Switzerland
[4] Univ Basel, Dept Clin Res, Basel, Switzerland
[5] Cantonal Hosp Winterthu, Dept Intens Care Med, Winterthur, Switzerland
[6] Bern Univ, Bern Univ Hosp, Dept Emergency Med, Inselspital, Bern, Switzerland
[7] Bern Univ, Bern Univ Hosp, Dept Nephrol & Hypertens, Inselspital, Bern, Switzerland