1. Department of Orofacial Pain and Oral Medicine, Yonsei University College of Dentistry, Seoul, Korea
2. Yonsei Comma Dental Clinic, Yangju, Korea
3. Yenihani Dental Clinic, Seoul, Korea
4. Department of Oral and Maxillofacial Radiology, Institute of Biomedical & Health Sciences, Applied Life Sciences, Hiroshima University, Hiroshima, Japan