[1] Kanto Cent Hosp, Dept Neurol, Setagaya Ku, Tokyo 1588631, Japan
[2] Kanto Cent Hosp, Dept Radiol, Tokyo 1588631, Japan
[3] Tokyo Metropolitan Matsuzawa Hosp, Dept Lab Med & Pathol, Tokyo, Japan
[4] Musashino Red Cross Hosp, Dept Pathol, Tokyo, Japan
[5] Yokufukai Geriatr Hosp, Organ & Funct Pathol Div, Tokyo, Japan