1. Division of Pathology; Department of Oral Diagnostic Sciences; School of Dentistry; Showa University; Tokyo Japan
2. Department of Pathology; School of Medicine; Showa University; Tokyo Japan
3. Division of Radiology; Department of Oral Diagnostic Sciences; School of Dentistry; Showa University; Tokyo Japan
4. Department of Oral and Maxillofacial Surgery; School of Dentistry; Showa University; Tokyo Japan
5. Department of Pathology; Showa University Koto Toyosu Hospital; Tokyo Japan