[1] Univ Klinikum Tubingen, Dept Innere Med, Internist Intensivstat, Tubingen, Germany
[2] Univ Klinikum Hamburg Eppendorf, Klin Intens Med, Hamburg, Germany
[3] St Antonius Hosp, Innere Med, Eschweiler, Germany
[4] Kliniken Stadt Koln gGmbH, Cologne, Germany
[5] Klinikum Barnim GmbH, Klin Internist Intens & Notfallmed & Klin Infekti, Werner Forssmann Krankenhaus, Eberswalde, Germany
[6] Albert Ludwigs Univ Freiburg, Univ Klinikum, Univ Notfallzentrum, Freiburg, Germany
[7] Friedrich Alexander Univ Erlangen Nurnberg, Klinikum Nurnberg Sud, Nephrol & Hypertensiol, Nurnberg, Germany
[8] Charite Univ Med Berlin, Campus Virchow Klinikum & Charite Mitte, Arbeitsbereich Notfallmed Rettungsstellen CPU, Augustenburger Pl 1, D-13363 Berlin, Germany