Author Contributions: Both authors had full access to all 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: Both authors.
Acquisition of data: Agrawal.
Analysis and interpretation of data: Both authors.
Drafting of the manuscript: Both authors.
Critical revision of the manuscript for important intellectual content: Both authors.
Statistical analysis: Both authors.
Administrative, technical, and material support: Both authors.
Study supervision: Rockey.
Published Online: July 15, 2013. doi:10.1001/jamainternmed.2013.8417.
Conflict of Interest Disclosures: None reported.
Additional Contributions: We thank all of those who filled out questionnaires.