1. Department of Orofacial Pain and Oral Medicine, College of Dentistry, Dankook University, Cheonan, Korea
2. Department of Oral Medicine, Dental and Life Science Institute, Pusan National University School of Dentistry, Yangsan, Korea
3. Department of Oral Medicine, Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Korea
4. Clinic of Oral Medicine and Orofacial Pain, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
5. Department of Oral Medicine, Seoul National University Dental Hospital, Seoul, Korea