1. Klinik für Innere Medizin II, Abteilung Hämatologie und internistische Onkologie, Universitätsklinikum Jena, Jena, Germany
2. Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Wuerzburg, Wuerzburg, Germany
3. INSERM Unit 830, Genetics and Biology of Cancers, Institute Curie Research Center, Paris, France
4. Department of Clinical Chemistry, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
5. Research Institute Children's Cancer Center and Clinic of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany