Submitted for Publication: May 2, 2013; final revision received September 17, 2013; accepted October 10, 2013.
Published Online: February 19, 2014. doi:10.1001/jamapsychiatry.2013.4506.
Study concept and design: M. J. Lee, Seo, Na, J.-H. Lee.
Acquisition of data: Na, G. H. Kim, C. H. Kim, Noh, Cho, H. J. Kim, Yoon, Ye, J. S. Kim, S. T. Kim.
Analysis and interpretation of data: M. J. Lee, C. Kim, Park, G. H. Kim, Chin, Jeon, J.-M. Lee, Choe, K.-H. Lee, J. S. Kim, J.-H. Lee, Ewers, Werring, Weiner.
Drafting of the manuscript: M. J. Lee, Seo, Na, Park, G. H. Kim, C. H. Kim, Noh, Cho, H. J. Kim, Yoon, Ye, Chin, Jeon, J.-M. Lee, K.-H. Lee, J. S. Kim, J.-H. Lee.
Critical revision of the manuscript for important intellectual content: Na, C. Kim, J. S. Kim, S. T. Kim, J.-H. Lee, Ewers, Werring, Weiner.
Statistical analysis: M. J. Lee, C. Kim, J.-H. Lee.
Obtained funding: Na.
Administrative, technical, or material support: Seo, G. H. Kim, J. S. Kim, J.-H. Lee.
Study supervision: Seo, C. Kim, J. S. Kim, J.-H. Lee, Ewers.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grant NRF-2013R1A1A2065365 from the Basic Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education; by grants HI10C2020 and HIC120713 from the Korean Healthcare Technology Research and Development Project Ministry for Health and Welfare Affairs; by Ministry of Education, Science, and Technology program grant MEST 2011-0028333 from the Korea Science and Engineering Foundation National Research Laboratories; by grants CRL-108011 and CRS110-14-1 from Samsung Medical Center; and by grant 2013K000338 from the Converging Research Center Program through the Ministry of Science, Information, Communication, Technology, and Future Planning, Korea.