[1] Tohoku Univ, Grad Sch Med, Div Mol Epidemiol, Sendai, Miyagi 980, Japan
[2] Tohoku Univ Hosp, Dept Pharm, Sendai, Miyagi, Japan
[3] Meiji Pharmaceut Univ, Dept Publ Hlth & Epidemiol, Tokyo, Japan
[4] Shiga Univ Med Sci, Dept Hlth Sci, Otsu, Shiga 52021, Japan
[5] Tohoku Univ, Grad Sch Med, Dept Obstet & Gynecol, Sendai, Miyagi 980, Japan