1. University Hospital Leipzig, Division of Hematology and Cellular Therapy, Department of Hematology, Cellular Therapy, Hemostaseology and Infectiology, Leipzig, Germany
2. Vivantes Clinic Friedrichshain, Internal Medicine, Vascular Medicine and Coagulation Disorders, Berlin, Germany
3. University Hospital Halle, Department of Pediatrics, Halle (Saale), Germany
4. University Hospital Jena, Department of Pediatrics, Jena, Germany
5. Charité University Medicine, Department of Pediatric Hematology and Oncology, Berlin, Germany
6. University Hospital Leipzig, Department of Pediatric Oncology, Hematology and Hemostaseology, Leipzig, Germany
7. University Hospital Magdeburg, Department of Pediatrics, Magdeburg, Germany
8. University Hospital Carl Gustav Carus, Technische Universität Dresden, Medical Clinic I, Dresden, Germany
9. Centre of Coagulation Disorders, Leipzig, Germany
10. University Hospital Magdeburg, Department of Transfusion Medicine, Magdeburg, Germany
11. Rostock South City Medical Centre, Department of Hematology and Oncology, Rostock, Germany
12. University Hospital Jena, Department of Hematology and Oncology, Jena, Germany
13. University Hospital Dresden, Technische Universität Dresden, Department of Pediatric Hematology and Oncology, Dresden, Germany