1. Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-Do, Korea
2. Clinical Dental Education, Department of Dentistry, Dental Research Institutes, School of Dentistry, Seoul National University, Seoul, Korea
3. Cardiovascular Center, Department of Internal Medicine, Seoul National University Bundang Hospital, 82, Gumi-Ro 173 Beon-Gil, Bundang-Gu, Seongnam-Si, Gyeonggi-Do, Korea
4. Department of Internal Medicine, Seoul National University, 101 Daehak-ro, Chong No Gu, Seoul, Korea
5. Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-Do, Korea