Submitted for Publication: January 24, 2013; final revision received May 3, 2013; accepted May 29, 2013.
Published Online: November 20, 2013. doi:10.1001/jamapsychiatry.2013.2842.
Study concept and design: Aybek, Nicholson, Zelaya, Craig, David, Kanaan.
Acquisition of data: Aybek, Nicholson, Zelaya, Craig.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Aybek, Nicholson, Zelaya, Craig, David.
Critical revision of the manuscript for important intellectual content: Nicholson, Zelaya, O’Daly, Craig, David, Kanaan.
Statistical analysis: Aybek, Nicholson, Zelaya, O’Daly.
Obtained funding: Aybek, David, Kanaan.
Administrative, technical, and material support: Aybek, Nicholson, Zelaya, Craig, David.
Study supervision: Zelaya, Craig, David, Kanaan.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was funded by prospective researcher grant PASMP3_132527 from the Swiss National Research Foundation (Dr Aybek), by Bourse Pro-Femme from the University of Lausanne (Dr Aybek), and by Strategic (Milstein) Award G0701055 from the United Kingdom Medical Research Council (Drs Craig, David, and Kanaan). Drs Craig and David were also supported by the National Institute for Health Research Biomedical Research Centre at the South London and Maudsley National Health Service Foundation Trust and by the Institute of Psychiatry, King’s College London.
Role of the Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, and approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: François Vingerhoets, MD, provided helpful comments on the manuscript, and Ferath Kherif, PhD, provided useful advice on SPM8 analysis. Tirril Harris, PhD, and Wojtek Wojic, MD, provided panel input on the clinical evaluation of participants. None of the contributors were compensated for their help.