Published Online: January 21, 2015. doi:10.1001/jamapsychiatry.2014.2440.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: M. J. Coffey, C. E. Coffey.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Ahmedani.
Administrative, technical, or material support: C. E. Coffey, Ahmedani.
Study supervision: C. E. Coffey, Ahmedani.
Conflict of Interest Disclosures: None reported.