[1] Univ Zurich Hosp, Med Intens Care Unit, CH-8091 Zurich, Switzerland
[2] Univ Zurich Hosp, Inst Clin Chem, CH-8091 Zurich, Switzerland
[3] Univ Zurich Hosp, Div Clin Immunol, CH-8091 Zurich, Switzerland
[4] Univ Zurich Hosp, Div Cardiol, CH-8091 Zurich, Switzerland
[5] Stadtspital Triemli, Div Cardiol, Zurich, Switzerland
[6] Stadtspital Triemli, Inst Clin Chem, Zurich, Switzerland