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Use of the registry database and additional medical data including brain images was also approved by the Seoul National University Bundang Hospital IRBs (No. B-1058-312-116).","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"H.-J.B, the principal investigator, is involved as a member of the steering committee, and\/or a site investigator, of multicenter clinical studies sponsored by Otsuka Korea, Bayer Korea, Boehringer Ingelheim Korea, SK Chemicals, ESAI-Korea, Daewoong Pharmaceutical Co. Ltd., Daichi Sankyo, AstraZeneca Korea, Dong-A Pharmaceutical, and Yuhan Corporation. 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