Author Contributions: Dr Na takes full responsibility for the accuracy of the data and analysis. Study concept and design: Perl, Wald, Bell, and Harel. Analysis and interpretation of data: Perl, Wald, Na, Bell, and Harel. Drafting of the manuscript: Perl, Na, Bell, and Harel. Critical revision of the manuscript for important intellectual content: Perl, Wald, Bell, and Harel. Statistical analysis: Na and Harel. Obtained funding: Perl. Administrative, technical, and material support: Perl, Wald, and Harel. Study supervision: Perl and Bell.
Financial Disclosure: None reported.
Additional Contributions: We are grateful for the thoughtful input of Louise M. Moist, MD.