1. R&D Institute, Korea Tooth Bank, Seoul, Korea.
2. Department of Oral and Maxillofacial Surgery, Section of Dentistry, Armed Forces Capital Hospital, Seongnam, Korea.
3. Department of Oral and Maxillofacial Surgery, Seoul Asan Medical Center, Seoul, Korea.
4. Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea.
5. Department of Oral and Maxillofacial Surgery, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea.
6. Department of Dental Implant/Oral Surgery, Private Clinic, Seoul, Korea.