1. Department of Oral and Maxillofacial Radiology, Osaka University Graduate School of Dentistry, Osaka, Japan
2. Department of Oral and Maxillofacial Radiology, College of Dentistry, Taibah University, Medina, Saudi Arabia
3. Department of Oral and Maxillofacial Radiology, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
4. 3D Craniofacial Image Research Laboratory, School of Dentistry, Copenhagen University Hospital Rigshospitalet, University of Copenhagen, Copenhagen, Denmark