Author Contributions: Dr Cahill had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Cahill, Chi, Claus.
Acquisition of data: Cahill.
Analysis and interpretation of data: Cahill, Chi, Claus, Day.
Drafting of the manuscript: Cahill, Claus.
Critical revision of the manuscript for important intellectual content: Cahill, Chi, Claus, Day.
Statistical analysis: Cahill, Claus.
Obtained funding: Day, Claus.
Administrative, technical or material support: Day.
Study supervision: Claus, Day.
Financial Disclosures: None reported.
Funding/Support: This work was supported by the Brain Science Foundation.
Role of the Sponsors: The sponsor had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.