1. Division of Oral and Maxillofacial Surgery, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
2. Division of Internal Medicine, Department of Oral Medicine, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
3. Division of Clinical Pathology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan