Published Online: October 8, 2012. doi:10.1001/archinternmed.2012.4501
Author Contributions:Study concept and design: Cantrell, Suchard, Wu, and Gerona. Acquisition of data: Gerona. Analysis and interpretation of data: Cantrell, Wu, and Gerona. Drafting of the manuscript: Cantrell, Suchard, Wu, and Gerona. Critical revision of the manuscript for important intellectual content: Cantrell, Suchard, Wu, and Gerona. Statistical analysis: Gerona. Obtained funding: Wu. Administrative, technical, and material support: Cantrell and Wu. Study supervision: Cantrell and Wu.
Financial Disclosure: None reported.
Previous Presentation: This study was an oral presentation at the 2011 North American Congress of Clinical Toxicology; September 23, 2011; Washington, DC.