1. Department of Oral Morphology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
2. Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
3. Department of Regenerative Science Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
4. Department of Oral Healthcare Education, Institute of Biomedical Sciences Tokushima University Graduate School Tokushima Japan