Published Online: September 24, 2012. doi:10.1001/archinternmed.2012.4089
Author Contributions:Study concept and design: Fairlie, Shapiro, Hersh, and Hicks. Acquisition of data: Shapiro. Analysis and interpretation of data: Shapiro, Hersh, and Hicks. Drafting of the manuscript: Fairlie and Hicks. Critical revision of the manuscript for important intellectual content: Fairlie, Shapiro, Hersh, and Hicks. Statistical analysis: Fairlie, Shapiro, Hersh, and Hicks. Obtained funding: Hersh. Study supervision: Hicks.
Financial Disclosure: None reported.
Disclaimer: The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the Centers for Disease Control & Prevention.