[1] Juntendo Univ, Grad Sch Med, Tokyo, Japan
[2] Natl Cerebral & Cardiovasc Ctr Hosp, Osaka, Japan
[3] Iwate Univ Hosp, Dept Internal Med, Iwate, Japan
[4] Toho Univ, Fac Med, Tokyo, Japan
[5] Hamamatsu Univ, Dept Internal Med 3, Sch Med, Hamamatsu, Japan
[6] Teikyo Univ, Tokyo, Japan
[7] Yokohama Minami Kyosai Hosp, Yokohama, Japan
[8] Tokyo Med & Dent Univ, Tokyo, Japan
[9] Mitsui Mem Hosp, Tokyo, Japan