[1] Tokyo Med & Dent Univ, Grad Sch Med & Dent Sci, Dept Psychosomat Dent, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138549, Japan
[2] Hlth Sci Univ Hokkaido, Div Dis Control & Mol Epidemiol, Dept Oral Growth & Dev, Sch Dent, Tobetsu, Hokkaido, Japan
[3] Hlth Sci Univ Hokkaido, Div Oral Med & Pathol, Dept Human Biol & Pathophysiol, Sch Dent, Tobetsu, Hokkaido, Japan