1. Dental Research Institute, Seoul National University, Seoul, Republic of Korea.
2. Department of Maxillofacial Cell and Developmental Biology, Seoul National University, Seoul, Republic of Korea.
3. Department of Oral and Maxillofacial Surgery, School of Dentistry, Brain Korea 21 2nd Program for Craniomaxillofacial Life Science, Seoul National University, Seoul, Republic of Korea.
4. School of Electrical Engineering and Computer Science, Seoul National University, Seoul, Republic of Korea.