[1] Seoul Natl Univ, Dept Neuropsychiat, Bundang Hosp, Seongnam, South Korea
[2] Seoul Natl Univ, Coll Med, Dept Psychiat, Seoul, South Korea
[3] Univ New South Wales, Ctr Hlth Brain Ageing, Sydney, NSW, Australia
[4] Univ New South Wales, Dementia Collaborat Res Ctr, Sydney, NSW, Australia
[5] Yonsei Univ, Dept Psychiat, Wonju Severance Christian Hosp, Wonju, South Korea
[6] Dongguk Univ, Dept Psychiat, Gyeongju Hosp, Gyeongju, South Korea
[7] Gyeongsang Natl Univ, Sch Med, Dept Psychiat, Jinju, South Korea
[8] Soonchunhyang Univ, Dept Neuropsychiat, Bucheon Hosp, Bucheon, South Korea
[9] Chungnam Natl Univ, Sch Med, Dept Psychiat, Daejeon, South Korea
[10] Konkuk Univ, Sch Med, Dept Psychiat, Chungju, South Korea
[11] Konkuk Univ, Chungju Hosp, Chungju, South Korea
[12] Jeju Natl Univ Hosp, Dept Neuropsychiat, Jeju, South Korea
[13] Konkuk Univ, Sch Med, Dept Psychiat, Seoul, South Korea
[14] Konkuk Univ, Med Ctr, Seoul, South Korea
[15] Kyunggi Prov Hosp Elderly, Dept Neuropsychiat, Yongin, South Korea
[16] Seoul Natl Univ Hosp, Dept Neuropsychiat, Seoul, South Korea
[17] Inje Univ, Dept Neuropsychiat, Sanggye Paik Hosp, Seoul, South Korea
[18] Dankook Univ Hosp, Dept Psychiat, Cheonan, South Korea
[19] Kangwon Natl Univ Hosp, Dept Neuropsychiat, Chunchon, South Korea
[20] Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci Physiol, Dept Psychiat & Neurochem,Ctr Ageing & Hlth AGECA, Gothenburg, Sweden
[21] Natl & Kapodistrian Univ Athens, Aiginit Hosp, Med Sch, Dept Neurol 1, Athens, Greece
[22] Columbia Univ, Dept Neurol, New York, NY USA
[23] Harokopio Univ, Dept Nutr & Dietet, Athens, Greece
[24] Univ Thessaly, Univ Hosp Larissa, Neurol Dept, Larisa, Greece
[25] Univ Leipzig, Med Fac, Inst Social Med Occupat Hlth & Publ Hlth ISAP, Leipzig, Germany
[26] Fudan Univ, Huashan Hosp, Inst Neurol, Shanghai, Peoples R China
[27] Fudan Univ, Huashan Hosp, Natl Clin Res Ctr Aging & Med, Shanghai, Peoples R China
[28] Univ Zaragoza, Dept Med & Psychiat, Zaragoza, Spain
[29] Inst Invest Sanitaria Aragon, Zaragoza, Spain
[30] Inst Salud Carlos III, Biomed Res Networking Ctr Mental Hlth Network CIB, Madrid, Spain
[31] Seoul Natl Univ, Dept Brain & Cognit Sci, Coll Nat Sci, Seoul, South Korea