1. Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea.
2. Department of Orofacial Pain and Oral Medicine, Yonsei Dental Hospital, Yonsei University College of Dentistry, Seoul, Korea.
3. Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, and Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, and Department of Oral Medicine, Seoul National University Dental Hospital, Seoul, Korea. ankara01@snu.ac.kr