1 Institute of Laboratory Medicine, University Hospital, LMU Munich, Munich, Germany.
2 Medical Department II, Hematology and Oncology, University Hospital Schleswig-Holstein, Kiel, Germany.
3 Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
4 AWMF - Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften, Association of the Scientific Medical Societies in Germany, Berlin, Germany.