1. Institute of Clinical Medicine and Department of Pediatrics University of Eastern Finland Kuopio Finland
2. Department of Pediatrics and Neonatology Kuopio University Hospital Kuopio Finland
3. Department of Orthopaedics and Traumatology Tampere University Hospital Tampere Finland
4. Faculty of Medicine and Health Technologies Tampere University Tampere Finland
5. Department of Cardiothoracic Surgery, Tampere Heart Hospital Tampere University Hospital Tampere Finland