1 Institute of Pathology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Goettingen, Germany. samy.hakroush@med.uni-goettingen.de.
2 Department of Nephrology and Rheumatology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Goettingen, Germany.
3 Department of Haematology and Oncology, University Medical Center Göttingen, Goettingen, Germany.
4 Department of Nephrology and Rheumatology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Goettingen, Germany. mkoziolek@med.uni-goettingen.de.