1. Department of Orthodontics, Okayama University Hospital, 2-5-1, Shikata-cho, Okayama City, Okayama, 700-8525, Japan
2. Advanced Cleft Lip and Cleft Palate Center, Okayama University Hospital, 2-5-1, Shikata-cho, Okayama City, Okayama, 700-8525, Japan
3. Department of Orthodontics, Graduate, School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Okayama City, Okayama, 700-8525, Japan