Published Online: December 26, 2013. doi:10.1001/jamaophthalmol.2013.6306.
Study concept and design: Kjellström, Ghosh, Andréasson.
Acquisition of data: Kjellström, Vijayasarathy.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Kjellström, Vijayasarathy.
Statistical analysis: Kjellström.
Obtained funding: Kjellström, Ghosh, Andréasson.
Administrative, technical, or material support: All authors.
Study supervision: Kjellström, Ghosh, Andréasson.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grants from the Faculty of Medicine at Lund University, Stiftelsen Synfrämjandets Forskningsfond, Fiundation Olle Engkvist, and the Swedish Medical Research Council.
Role of the Sponsor: The funding organizations 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.