1. Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
2. Department of Biochemistry, Niigata University School of Dentistry, Niigata 951-8514, Japan
3. Division of Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8120, Japan