1. Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Academic Assembly University of Toyama Toyama Toyama Japan
2. Department of Orthopedic Surgery, Faculty of Medicine, Academic Assembly University of Toyama Toyama Toyama Japan
3. Department of Orthopedic Surgery Itoigawa Sogo Hospital Itoigawa Nigata Japan
4. Department of Oral and Maxillofacial Surgery Naha City Hospital Naha Okinawa Japan
5. Department of Oral and Maxillofacial Surgery Toyama Red Cross Hospital Toyama Toyama Japan
6. Department of Dentistry and Oral Surgery, Division of Medicine for Function and Morphology of Sensory Organs, Faculty of Medicine Osaka Medical and Pharmaceutical University Takatsuki Osaka Japan
7. Divisions of Oral and Maxillofacial Surgery Niigata University Graduate School of Medical and Dental Sciences Niigata Japan