Published Online: January 21, 2013. doi:10.1001/jamainternmed.2013.1569
Author Contributions: Dr M.-T. Wu had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: C.-F. Wu, Hsieh, Liu, and M.-T. Wu. Acquisition of data: Chen, Liu, and M.-T. Wu. Analysis and interpretation of data: C.-F. Wu, Liu, and M.-T. Wu. Drafting of the manuscript: C.-F. Wu and M.-T. Wu. Critical revision of the manuscript for important intellectual content: Hsieh, Chen, Liu, and M.-T. Wu. Statistical analysis: C.-F. Wu and M.-T. Wu. Obtained funding: Chen and M.-T. Wu. Administrative, technical, and material support: Hsieh, Chen, Liu, and M.-T. Wu. Study supervision: M.-T. Wu.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by the Taiwan National Health Research Institutes (NHRI-EX98-9708PI), the National Science Council (NSC100-2314-B-037-027), and Kaohsiung Medical University Hospital (KMUH98-8R05 and KMUH100-9R54).
Role of the Sponsors: The Taiwan National Health Research Institutes and the National Science Council were involved in supporting the design and conduct of the study; and the Kaohsiung Medical University Hospital assisted with the collection, management, analysis, and interpretation of the data as well as the preparation, review, and approval of the manuscript.
Additional Contributions: Chao-Yi Chien, MS, and Meng-Tian Tsai, MS, assisted with laboratory analyses, and James Steed, BS, assisted in editing the manuscript.