1. Department of Pediatric Orthopaedics and Adult Foot and Ankle Surgery, Orthopaedic Hospital Speising, Vienna, Austria
2. Royal National Orthopaedic Hospital, London, UK
3. Ruth Children’s Hospital, Rambam Health Care Campus, Technion Faculty of Medicine, Haifa, Israel
4. Section of Children’s Orthopaedics and Reconstructive Surgery, Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
5. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
6. Department of Orthopaedics, Aalborg University Hospital, Aalborg, Denmark
7. Department of Paediatric Orthopaedics, Asklepios Klinik Sankt Augustin, Sankt Augustin, Germany
8. Department of Paediatric Orthopaedics, Schulthess Clinic, Zurich, Switzerland
9. Paediatric Orthopaedics, Deformity Reconstruction and Foot Surgery, Muenster University Hospital, Muenster, Germany