1. Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry, Seoul, Korea
2. Department of Oral Pathology, Yonsei University College of Dentistry, Seoul, Korea
3. BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea
4. Center for Genome Engineering, Institute for Basic Science, Daejeon, Korea