1. Haematology and Clinical Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
2. Division of Hematology, University Children's Hospital, Zurich, Switzerland
3. Centre for Development and Complex Chronic Diseases in Children (iSPZHauner), Department of Paediatrics, Paediatric Haemophilia Centre, LMU Munich, Munich, Germany
4. Coagulation Center Rhein-Ruhr, Duisburg, Germany
5. Department of Paediatric Oncology/Haematology, Saarland University Hospital, Homburg, Germany
6. Internal Medicine, Angiology and Haemostaseology, Haemophilia Centre, Vivantes Hospital Friedrichshain, Berlin, Germany
7. Department of Paediatrics and Adolescent Medicine, University Hospital Frankfurt, Goethe University, Frankfurt, Germany
8. Paediatric Haemophilia Centre, Department of Paediatrics, LMU Munich, Munich, Germany
9. Department of Paediatrics, Medical University of Vienna, Vienna, Austria
10. Institute for Experimental Haematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
11. Department of Paediatrics 1, Medical University of Innsbruck (MUI), Innsbruck, Austria
12. Haemophilia Center, Werlhof-Institute, Hannover, Germany
13. Haemophilia Center Rhine Main, HZRM, Mörfelden-Walldorf, Germany