[1] Unnan City Hosp, Div Internal Med, Unnan, Shimane, Japan
[2] Shimane Univ, Ctr Community Based Healthcare Res & Educ CoHRE, Matsue, Shimane, Japan
[3] Shimane Univ, Fac Med, Dept Gen Med, Matsue, Shimane, Japan
[4] Kitahara Dent Clin, Osaka, Japan
[5] Shimane Univ, Fac Med, Dept Funct Pathol Med, Matsue, Shimane, Japan
[6] Shimane Univ, Fac Med, Dept Lab Med, Matsue, Shimane, Japan
[7] Shimane Univ, Fac Human Sci, Matsue, Shimane, Japan