Published Online: March 16, 2015. doi:10.1001/jamapediatrics.2015.0384.
Study concept and design: Majumder, Cohn, Mekaru, Brownstein.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Majumder.
Obtained funding: Brownstein.
Administrative, technical, or material support: Cohn, Mekaru, Huston.
Study supervision: Brownstein.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by grant R01LM010812 from the National Library of Medicine.
Role of the Funder/Sponsor: The funder 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.