Submitted for Publication: May 19, 2013; final revision received July 16, 2013; accepted July 26, 2013.
Published Online: January 2, 2014. doi:10.1001/jamaophthalmol.2013.6243.
Study concept and design: Ho, Hsu, Hsieh.
Acquisition of data: Ho, Hsieh.
Analysis and interpretation of data: Ho, Hsieh.
Drafting of the manuscript: Ho.
Critical revision of the manuscript for important intellectual content: Hsu, Hsieh.
Statistical analysis: Hsieh.
Study supervision: Hsu, Hsieh.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by a grant from Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan (TCRD-TPE-100-13).
Role of the Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.