1. Centre for Development and Complex Chronic Diseases in Children (iSPZ Hauner), Haemophilia Unit, LMU Munich, Munich, Germany
2. Department of Paediatrics, Paediatric Haemophilia Centre, LMU Munich, Munich, Germany
3. Children's Hospital, Kantonsspital Luzern, Lucerne, Switzerland
4. Department of Anaesthesiology, Ludwig-Maximilians University, Munich, Germany
5. Department of Transfusion Medicine, Cell Therapeutics and Haemostaseology, Ludwig-Maximilians University, Munich, Germany