Published Online: December 5, 2013. doi:10.1001/jamaophthalmol.2013.6209.
Study concept and design: S. B. Bressler, Baker, N. M. Bressler, Edwards, Glassman.
Acquisition of data: S. B. Bressler, Baker, Almukhtar, Edwards, Scott.
Analysis and interpretation of data: S. B. Bressler, Baker, Almukhtar, N. M. Bressler, Edwards, Glassman.
Drafting of the manuscript: S. B. Bressler, Baker, Almukhtar, Edwards.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Almukhtar, Glassman.
Obtained funding: N. M. Bressler, Glassman.
Administrative, technical, or material support: Almukhtar, Scott.
Study supervision: S. B. Bressler, Baker, N. M. Bressler, Glassman.
Conflict of Interest Disclosures: A complete list of all DRCR.net investigator financial disclosures can be found at http://www.drcr.net. Grants to investigators at The Johns Hopkins University are negotiated and administered by the institution (such as the School of Medicine) that receives the grants, typically through the Office of Research Administration. Individual investigators who participate in the sponsored project(s) are not directly compensated by the sponsor but may receive salary or other support from the institution to support their effort on the project(s). Dr S. B. Bressler is coinvestigator of grants at The Johns Hopkins University sponsored by Bausch & Lomb, Novartis, and Regeneron and receives grants from EMMES Corp and Notal Vision. Dr N. M. Bressler is principal investigator of grants at The Johns Hopkins University sponsored by the following entities (not including the National Institutes of Health): Bausch & Lomb, Bristol-Myers Squibb, Carl Zeiss Meditec, EMMES Corp, ForSight Labs, LLC, Genentech, Genzyme Corp, Lumenis, Notal Vision, Novartis, and Regeneron. No other disclosures were reported.
Funding/Support: This work was supported through cooperative agreements EY14231 and EY018817 from the National Eye Institute and the National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, US Department of Health and Human Services.
Role of the Sponsor: The National Institutes of Health participated in oversight of the conduct of the study and review of the manuscript but not directly in the design or conduct of the study, collection, management, analysis, and interpretation of the data, or preparation of the manuscript.
Group Information: A complete list of the Diabetic Retinopathy Clinical Research Network appears in the Supplement.
Correction: This article was corrected online December 19, 2013, to add group information.