1 Clinic for Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen 37075, Germany. Electronic address: gross.oliver@med.uni-goettingen.de.
2 Clinic of Anaesthesiology, University Medical Center Göttingen, Göttingen 37075, Germany.
3 Cologne General Hospital, Synlab Laboratories, Leverkusen-Cologne, Germany.
4 III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
5 Institute of Infection Control and Infectious Diseases, University Medical Center Göttingen, Göttingen 37075, Germany.