1. Department of Advanced General Dentistry, Dankook University College of Dentistry, Cheonan, Republic of Korea.
2. Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea.
3. Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Republic of Korea.
4. Department of Prosthodontics, Yonsei University College of Dentistry, Seoul, Republic of Korea.
5. Division in Anatomy and Development Biology, Department of Oral Biology, Yonsei University College of Dentistry, Seoul, Republic of Korea.
6. Department of Advanced General Dentistry, Yonsei University College of Dentistry, Seoul, Republic of Korea.