1. Department of Pediatrics, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
2. Department of Orthopedics, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
3. Department of Radiology, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
4. Department of Pathology, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.