[1] Hallym Univ, Dept Neurol, Seoul, South Korea
[2] Wonkwang Univ, Sanbon Med Ctr, Dept Neurol, Gunpo 435040, South Korea
[3] Wonkwang Univ, Ansan Municipal Geriatr Hosp, Ansan, South Korea
[4] Wonkwang Univ, Ctr Prevent Stroke & Dementia, Ansan, South Korea
[5] Wonkwang Univ, Dept Neurol, Iksan, South Korea
[6] Korea Ctr Dis Control & Prevent, Div Hlth & Nutr Survey, Cheongwon, South Korea
[7] Wonkwang Univ, Coll Med, Dept Nursing, Iksan, South Korea