1. Department of Oral Pathology and Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University
2. Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University
3. Regional Cardiovascular Center, Wonkwang University Hospital
4. Department of Statistics, Research Institute of Applied Statistics, Jeonbuk National University