Author Contributions: Dr Jain and Ms Kuhn had full access to all of 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: Jain, Flanders, and Nallamothu. Acquisition of data: Jain, Repaskey, and Nallamothu. Analysis and interpretation of data: Jain, Kuhn, Chan, Kronick, Flanders, and Nallamothu. Drafting of the manuscript: Jain, Kuhn, Flanders, and Nallamothu. Critical revision of the manuscript for important intellectual content: Jain, Repaskey, Chan, Kronick, Flanders, and Nallamothu. Statistical analysis: Kuhn and Nallamothu. Obtained funding: Jain and Flanders. Administrative, technical, and material support: Jain and Flanders. Study supervision: Jain, Kronick, and Nallamothu.