Submitted for Publication: September 25, 2012; final revision received January 27, 2013; accepted March 11, 2013.
Published Online: October 9, 2013. doi:10.1001/jamapsychiatry.2013.2099.
Study concept and design: Collier, Frangou.
Acquisition of data: Vassos, Frangou.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Dima, Collier, Frangou.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Dima, Jogia, Vassos, Burdick, Frangou.
Obtained funding: Frangou.
Administrative, technical, and material support: Dima, Jogia, Collier.
Study supervision: Vassos, Frangou.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by an Independent Investigator Award 2008 from the National Alliance for Research in Schizophrenia and Affective Disorders (Dr Frangou).
Role of the Sponsor: The National Alliance for Research in Schizophrenia and Affective Disorders had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.