1. Department of Radiology Hacettepe University School of Medicine Ankara Turkey
2. Department of Pediatric Oncology Hacettepe University School of Medicine Ankara Turkey
3. Department of Orthopedics and Traumatology Hacettepe University School of Medicine Ankara Turkey
4. Department of Biostatistics Hacettepe University School of Medicine Ankara Turkey
5. Department of Pathology Hacettepe University School of Medicine Ankara Turkey