Accepted for Publication: November 4, 2014.
Published Online: February 16, 2015. doi:10.1001/jamainternmed.2014.8071.
Study concept and design: Miller, Barber, Hermos, Cho, Gagnon.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Miller, Hermos, Gagnon.
Critical revision of the manuscript for important intellectual content: Barber, Leatherman, Fonda, Hermos, Cho, Gagnon.
Statistical analysis: Leatherman, Fonda, Cho, Gagnon.
Obtained funding: Miller, Barber Cho, Gagnon.
Administrative, technical, or material support: Barber, Fonda, Hermos, Cho, Gagnon.
Study supervision: Miller, Hermos Cho, Gagnon.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Miller and Ms Barber received support for this work from an investigator-initiated research grant (R21CE001605) from the Centers for Disease Control and Prevention (principal investigator, Dr Miller).
Role of the Funder/Sponsor: The Centers for Disease Control and Prevention had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.