1. Department of Clinical Biochemistry and Pathobiochemistry; Leibniz Center for Diabetes Research, Heinrich-Heine-University; 40225 Düsseldorf Germany
2. Department of Hematology, Oncology and Clinical Immunology; Heinrich-Heine-University; 40225 Düsseldorf Germany
3. Department of Orthopedic Surgery; Heinrich-Heine-University; 40225 Düsseldorf Germany
4. Bruker Daltonics; 28359 Bremen Germany
5. Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich-Heine-University; 40225 Düsseldorf Germany