1. Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry , Seoul , Korea
2. BK21 FOUR Project, Yonsei University College of Dentistry , Seoul , Korea
3. Department of Computer Science and Engineering, Graduate School of Artificial Intelligence, Pohang University of Science and Technology , Republic of Korea
4. Institute for Innovation in Digital Healthcare, Yonsei University , Seoul , Korea