1. Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
2. Department of Oral Pathology, Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, Korea.
3. Department of Pediatric Dentistry, Yonsei University College of Dentistry, Seoul, Korea.
4. Department of Oral and Maxillofacial Surgery, Apple Tree Institute of Biomedical Science, Apple Tree Dental Hospital, Seoul, Korea.
5. Docsmedi Co., Ltd., Goyang, Korea.
6. Department of Conservative Dentistry, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.