Submitted for Publication: September 15, 2014; final revision received December 11, 2014; accepted January 18, 2015.
Published Online: March 5, 2015. doi:10.1001/jamaoto.2015.102.
Study concept and design: Yen, Weng, Y. S. Lin.
Acquisition, analysis, or interpretation of data: Yen, C. Lin, Y. S. Lin.
Drafting of the manuscript: Yen, Weng, Y. S. Lin.
Critical revision of the manuscript for important intellectual content: Yen, C. Lin, Y. S. Lin.
Statistical analysis: Yen, Weng, Y. S. Lin.
Administrative, technical, or material support: C. Lin.
Study supervision: Yen, Y. S. Lin.
Conflict of Interest Disclosure: None reported.
Funding/Support: This study was supported by the Chi Mei Medical Center Research Fund.
Role of the Funder/Sponsor: The Chi Mei Medical Center Research Fund 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.