1. Department of Pediatric Dentistry, Dental and Life Science Institute & Dental Research Institute, School of Dentistry, Pusan National University, Yangsan 50612, Republic of Korea
2. Department of Prosthodontics, Dental and Life Science Institute & Dental Research Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Republic of Korea
3. Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul 03722, Republic of Korea