1. Department of Radiology, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea.
2. Department of Pediatric Dentistry, Research Institute of Clinical Medicine of Chonbuk National University, Jeonju, Republic of Korea.
3. Department of Pediatric Dentistry, National University Hospital, Jeonju, Republic of Korea.
4. Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea.
5. BK21 Program, Department of Preventive Dentistry, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea.
6. Department of Orthopaedic Surgery, School of Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea.
7. Department of Pediatrics, Chonbuk National University School of Medicine, Jeonju, Korea.