1. Interdisciplinary Orthopaedics, Aalborg University Hospital, Aalborg, Denmark
2. Danish Paedatric Orthopaedic Research, Aarhus University Hospital, Aarhus, Denmark
3. Department of Radiology, Aarhus University Hospital, Aarhus, Denmark
4. Department of Children’s Orthopaedics, Aarhus University Hospital, Aarhus, Denmark
5. Department of Midwifery, University College of Northern Denmark, Aalborg East, Denmark