[1] Klinikum Stuttgart Katharinenhosp, Dept Nephrol, Kriegsbergstr 60, D-70174 Stuttgart, Germany
[2] Univ Stuttgart, Inst Stochast & Applicat, Stuttgart, Germany
[3] Klinikum Stuttgart Katharinenhosp, Dept Emergency & Intens Care Med, Stuttgart, Germany
[4] Klinikum Stuttgart Katharinenhosp, Dept Gastroenterol Hepatol Pneumol & Infect Dis, Stuttgart, Germany
[5] Univ Cologne, Dept Internal Med 1, Div Infect Dis, Cologne, Germany