1. Dental Research Institute, Seoul National University School of Dentistry, Seoul 03080, Republic of Korea
2. Department of Oral Medicine and Oral Diagnosis, Bucheon Apple Tree Dental Hospital, 20, Bucheon-ro, Bucheon-si, Gyeonggi-do, Republic of Korea
3. Department of Orofacial Pain and Oral Medicine, Kyung Hee University Dental Hospital, Kyung Hee University School of Dentistry, #613 Hoegi-dong, Dongdaemun-gu, Seoul 02447, Republic of Korea
4. Department of Oral Medicine and Oral Diagnosis, Dental Research Institute, Seoul National University School of Dentistry, Seoul 03080, Republic of Korea