Submitted for Publication: January 22, 2014; final revision received March 28, 2014; accepted May 6, 2014.
Published Online: August 20, 2014. doi:10.1001/jamapsychiatry.2014.1093.
Study concept and design: Hauser, Brandeis, Walitza, Brem.
Acquisition, analysis, or interpretation of data: Hauser, Iannaccone, Ball, Mathys, Brandeis, Brem.
Drafting of the manuscript: Hauser, Brem.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Hauser.
Obtained funding: Brandeis, Walitza, Brem.
Administrative, technical, or material support: Iannaccone, Ball, Mathys, Brandeis, Walitza, Brem.
Study supervision: Brandeis, Walitza, Brem.
Conflict of Interest Disclosures: Dr Hauser is supported by the Swiss National Science Foundation. Dr Walitza has received speakers’ honoraria from Eli Lilly, Janssen-Cilag, and AstraZeneca in the past 5 years. No other disclosures were reported.
Funding/Support: This study was supported by the Swiss National Science Foundation (grant 320030_130237) and the Hartmann Müller Foundation (grant 1460).
Role of the Funder/Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: Niklas Brons, MD, Renate Drechsler, PhD, Carolin Knie, MSc, Julia Frey, MSc (University Clinics for Child and Adolescent Psychiatry, University of Zurich), and Philipp Stämpfli, PhD (Center of the Psychiatric University Hospital and the Department of Child and Adolescent Psychiatry, University of Zurich), provided technical assistance and helped to recruit the participants. No financial compensation was provided.