Submitted for Publication: April 12, 2014; final revision received June 10, 2014; accepted June 17, 2014.
Published Online: August 14, 2014. doi:10.1001/jamaoto.2014.1444.
Study concept and design: Hassan, Yumoto, Baraka, Wahba, Hafez, El-Adawy.
Acquisition, analysis, or interpretation of data: Hassan, Yumoto, Sanuki, Kumai, Kodama, Baraka, El-Adawy.
Drafting of the manuscript: Hassan, El-Adawy.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Hassan.
Administrative, technical, or material support: Hassan, Yumoto, Sanuki.
Study supervision: Yumoto, Baraka, Wahba, Hafez, El-Adawy.
Conflict of Interest Disclosures: None reported.