1. Department of Oral and Maxillofacial Radiology, Tokyo Dental College
2. Department of Clinical Pathophysiology, Tokyo Dental College
3. Department of Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University
4. Department of Oral and Maxillofacial Surgery, Tokyo Dental College
5. Department of Radiology, Massachusetts Eye and Ear Infirmary, Harvard Medical School