[1] Jikei Univ, Sch Med, Dept Neurol, Minato Ku, 3-25-8 Nishi Shimbashi, Tokyo 1058461, Japan
[2] Jikei Univ, Sch Med, Dept Ophthalmol, Minato Ku, 3-25-8 Nishi Shimbashi, Tokyo 1058461, Japan
[3] Chiba Hokusoh Hosp, Nippon Med Sch, Dept Ophthalmol, 1715 Kamagari, Inzai, Chiba 2701694, Japan
[4] Tokyo Metropolitan Geriatr Hosp, Brain Bank Aging Res, Itabashi Ku, 35-2 Sakae Cho, Tokyo 1730015, Japan
[5] Inst Gerontol, Itabashi Ku, 35-2 Sakae Cho, Tokyo 1730015, Japan
[6] Tokyo Metropolitan Geriatr Hosp, Dept Neurol, Itabashi Ku, 35-2 Sakae Cho, Tokyo 1730015, Japan
[7] Tokyo Metropolitan Geriatr Hosp, Dept Neuropathol, Itabashi Ku, 35-2 Sakae Cho, Tokyo 1730015, Japan