1. Orthopaedic Hospital for Children, Treatment Center Aschau im Chiemgau, 83229 Aschau im Chiemgau, Germany
2. Faculty of Engineering and Health Göttingen, University of Applied Sciences and Arts, 37077 Göttingen, Germany
3. Oxford University Hospitals NHSFT, Oxford OX3 9DU, UK
4. Department of Orthopaedic Trauma and Surgery, Friedrich-Alexander University Erlangen, 91054 Erlangen, Germany