Submitted for Publication: July 15, 2014; final revision received October 15, 2014; accepted November 19, 2014.
Published Online: March 25, 2015. doi:10.1001/jamapsychiatry.2014.3034.
Study concept and design: Bresnahan, Hornig, Lie, Reichborn-Kjennerud, Roth, Stoltenberg, Susser, Lipkin.
Acquisition, analysis, or interpretation of data: Bresnahan, Hornig, Schultz, Gunnes, Hirtz, Lie, Magnus, Reichborn-Kjennerud, Schjølberg, Stoltenberg, Surén, Susser, Lipkin.
Drafting of the manuscript: Bresnahan, Hornig, Schultz, Reichborn-Kjennerud, Stoltenberg.
Critical revision of the manuscript for important intellectual content: Bresnahan, Hornig, Schultz, Gunnes, Hirtz, Lie, Magnus, Roth, Schjølberg, Stoltenberg, Surén, Susser, Lipkin.
Statistical analysis: Bresnahan, Hornig, Schultz, Susser.
Obtained funding: Bresnahan, Hornig, Lie, Magnus, Reichborn-Kjennerud, Roth, Schjølberg, Stoltenberg, Surén, Susser, Lipkin.
Administrative, technical, or material support: Lie, Magnus, Roth, Surén.
Study supervision: Hornig, Hirtz, Magnus, Lipkin.
Conflict of Interest Disclosures: None reported.
Funding/Support: This research was supported by the Norwegian Ministry of Health and Care Services, the Norwegian Ministry of Education and Research, and grant NS47537 from the National Institutes of Health/National Institute of Neurological Disorders and Stroke (Dr Lipkin). The following grants from the Research Council of Norway have provided support to the ABC in general: 189457, 190694, and 196452.
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 the decision to submit the manuscript for publication.
Additional Contributions: Meredith Eddy, MPH, at the Center for Infection and Immunity, Columbia University Mailman School of Public Health, provided administrative support. We are grateful to all the families in Norway who take part in these ongoing studies. Ms Eddy was compensated for her work.