Submitted for Publication: September 24, 2012; final revision received December 24, 2013; accepted December 29, 2013.
Published Online: May 1, 2014. doi:10.1001/jamaophthalmol.2014.414.
Study concept and design: Ghassemi, Roohipoor.
Acquisition, analysis, or interpretation of data: Ghassemi, Shields, Ghadimi, Khodabandeh.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Ghassemi, Ghadimi.
Statistical analysis: Ghassemi, Shields, Ghadimi.
Obtained funding: Ghassemi.
Administrative, technical, or material support: Ghassemi, Shields, Khodabandeh, Roohipoor.
Study supervision: Ghassemi.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by the Tehran University of Medical Sciences research deputy.
Role of the Sponsor: Tehran University of Medical Sciences had a 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.