Accepted for Publication: May 5, 2014.
Published Online: September 1, 2014. doi:10.1001/jamainternmed.2014.3422.
Study concept and design: Ding, Hu, Willett.
Acquisition, analysis, or interpretation of data: Wang, Leung, Li, Chiuve, Hu, Willett.
Drafting of the manuscript: Wang.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Wang, Leung, Li, Ding, Willett.
Obtained funding: Willett.
Administrative, technical, or material support: Chiuve, Hu.
Study supervision: Hu.
Conflict of Interest Disclosures: None reported.