1. Division for Oral and Facial Disorders; Osaka University Dental Hospital; Osaka Japan
2. Oral Cancer Center; Tokyo Dental College; Chiba Japan
3. Department of Oral Medicine, Oral and Maxillofacial Surgery; Tokyo Dental College; Chiba Japan
4. Second Department of Oral and Maxillofacial Surgery; Osaka Dental University; Osaka Japan
5. Dentistry and Oral Surgery; JR Tokyo General Hospital; Tokyo Japan
6. Center for Oral Functional Disorders; Sasao Dental Clinic; Yamaguchi Japan
7. Department of Oral and Maxillofacial Surgery; Kinki University Faculty of Medicine; Osaka Japan