1. Department of Oral and Maxillofacial Surgery/Orthodontics; Yokohama City University Medical Center; Yokohama Japan
2. Department of Oral and Maxillofacial Surgery; Yokohama City University Graduate School of Medicine; Yokohama Japan
3. Department of Oral and Maxillofacial Surgery; Saiseikai Yokohamashi Nanbu Hospital; Yokohama Japan