[1] Juntendo Univ, Fac Med, Dept Gen Educ, 2-1-1 Hongo,Bunkyo Ku, Tokyo 1138421, Japan
[2] Juntendo Univ, Fac Med, Dept Gen Med, 2-1-1 Hongo,Bunkyo Ku, Tokyo 1138421, Japan
[3] Juntendo Univ, Fac Med, Dept Internal Med & Rheumatol, Bunkyo Ku, Tokyo, Japan
[4] Juntendo Univ, Fac Med, Dept Radiol, Bunkyo Ku, Tokyo, Japan