[1] Juntendo Univ, Sch Med, Res Inst Dis Old Age, Bunkyo Ku, Tokyo 1138421, Japan
[2] Juntendo Univ, Sch Med, Dept Neurol, Bunkyo Ku, Tokyo 1138421, Japan
[3] Pamela Youde Nethersole Eastern Hosp, Dept Med, Hong Kong, Hong Kong, Peoples R China
[4] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Chem Pathol, Hong Kong, Hong Kong, Peoples R China
[5] Kurashiki Cent Hosp, Dept Neurol, Kurashiki, Okayama, Japan
[6] Miyazaki Prefectural Hosp Nobeoka, Dept Neurol, Miyazaki, Japan
[7] Kumamoto Univ, Grad Sch Med Sci, Dept Neurol, Kumamoto, Japan
[8] Rabin Med Ctr, Dept Neurol, Petah Tiqwa, Israel
[9] Tel Aviv Univ, Sackler Fac Med, IL-69978 Tel Aviv, Israel
[10] Kagoshima Univ, Sch Med, Dept Neurol & Geriatr, Kagoshima 890, Japan
[11] Juntendo Univ, Nerima Hosp, Dept Neurology, Nerima Ku, Tokyo, Japan