1. Department of Conservative Dentistry; School of Dentistry; Seoul National University; Seoul Korea
2. Department of Conservative Dentistry; Section of Dentistry; Seoul National University Bundang Hospital; Seongnam Korea
3. Department of Oral and Maxillofacial Surgery; Section of Dentistry; Seoul National University Bundang Hospital; Seongnam Korea
4. Department of Dental Laboratory Science and Engineering; College of Health Science; Graduate School & BK21+ Program in Public Health Science; Korea University; Seoul Korea
5. Department of Public Health Science; Graduate School & BK21+ Program in Public Health Science; Korea University; Seoul Korea
6. Department of Conservative Dentistry; School of Dentistry, Kyungpook National University; Daegu Korea
7. Department of Conservative Dentistry; School of Dentistry; Seoul National University and Dental Research Institute; Seoul Korea