Published Online: November 12, 2012. doi:10.1001/2013.jamainternmed.65
Author Contributions:Study concept and design: Cohen, LeBaron, and Christianson. Acquisition of data: Cohen, Ilan, Garrett, and LeBaron. Analysis and interpretation of data: Cohen, Ilan, Garrett, and LeBaron. Drafting of the manuscript: Cohen. Critical revision of the manuscript for important intellectual content: Cohen, Ilan, Garrett, LeBaron, and Christianson. Statistical analysis: Cohen and Garrett. Obtained funding: LeBaron. Administrative, technical, and material support: Cohen and LeBaron.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Cohen is supported by a Robert Wood Johnson Foundation Investigator Award; Dr Ilan is supported by the Physicians' Services Inc Foundation.
Role of the Sponsors: The funding sources had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Additional Information: Dr Cohen and Mr Garrett performed the data coding and analysis; Drs Cohen, Ilan, and LeBaron did the data collection; and all authors contributed to the writing of the manuscript.
Additional Contributions: Daren K. Heyland, MD, MSc, assisted with data collection; Mariom V. Ferrer, with transcription; Chandler Krynen, BA, with coding; and Andrew G. Day, MSc, with statistical methods.