Published Online: June 4, 2012. doi:10.1001/archinternmed.2012.1791
Author Contributions: Drs Stickrath and Richlie 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: Stickrath, Druck, and Richlie. Acquisition of data: Stickrath, Druck, and Hensley. Analysis and interpretation of data: Stickrath, Maddox, and Richlie. Drafting of the manuscript: Stickrath, Druck, and Hensley. Critical revision of the manuscript for important intellectual content: Stickrath, Druck, Hensley, Maddox, and Richlie. Statistical analysis: Druck. Administrative, technical, and material support: Stickrath, Druck, and Richlie. Study supervision: Stickrath, Hensley, Maddox, and Richlie.
Financial Disclosure: None reported.
Additional Contributions: Allan Prochazka, MD, contributed to the design of the study and assisted with the statistical analysis; Howard Li, MD, contributed to the recruitment of participants and assisted with interpretation of the results; and Tanner Caverly, MD, contributed to the interpretation of the results and assisted with editing and preparing the manuscript.