1. Department of Radiology, Ludwig Maximilian University Hospital, Munich, München, Germany
2. Paediatric Thrombosis and Haemostasis Unit, Dr. von Hauner Children's Hospital Munich, Ludwig Maximilian University, Munich, Germany
3. Department for Pediatric Surgery, Ludwig Maximilian University Hospital, Munich, München, Germany
4. Clinic of Radiology, University Hospital Muenster, Muenster, Germany
5. Department of Neuroradiology, Clinic for Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
6. Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg - Eppendorf, Hamburg, Germany
7. Clinic and Policlinic of Diagnostic Radiology, Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany