Submitted for Publication: October 8, 2013; final revision received December 18, 2013; accepted December 20, 2013.
Published Online: April 10, 2014. doi:10.1001/jamaophthalmol.2013.8229.
Study concept and design: Jia, Xu, Ge, Fan.
Acquisition, analysis, or interpretation of data: Jia, Xu, Huang, Song, Pan, Zhang, He, Lin, Ge.
Drafting of the manuscript: Xu, Huang, Song, Pan, Zhang, He, Ge.
Critical revision of the manuscript for important intellectual content: Jia, Lin, Ge, Fan.
Statistical analysis: Jia, Xu.
Obtained funding: Song, Zhang, Lin.
Administrative, technical, or material support: Jia, Xu, Huang, Song, Pan, He, Ge.
Study supervision: Jia, Zhang, Ge.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by Scientific Research Program of National Health and Family Planning Commission of China grant 201402014, National Nature Science Foundation of China grants 81372469 and 81372909, Science and Technology Commission of Shanghai grants 13JC1406202 and 12ZR1417300, and Shanghai Rising-Star Program grant 11QA1404000.
Role of the Sponsor: The sponsors 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.