1. Division of Clinical Chemistry; Department of Molecular Medicine and Surgery; Karolinska Institutet and University Hospital; Stockholm Sweden
2. Center of Molecular Medicine; Karolinska Institutet and University Hospital; Stockholm Sweden
3. Institute of Clinical Chemistry and Laboratory Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
4. Department of Medicine, Hematology and Oncology Division; Case Western Reserve University and Louis Stokes Cleveland VA Medical Center; Cleveland OH USA