Accepted for Publication: June 4, 2014.
Published Online: August 11, 2014. doi:10.1001/jamainternmed.2014.3593.
Author Contributions: Drs Theisen-Toupal and Horowitz had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Theisen-Toupal, Breu.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Theisen-Toupal.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Theisen-Toupal, Horowitz.
Study supervision: Breu.
Conflict of Interest Disclosures: None reported.