Author Contributions: Dr Chen 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: Chen, Colditz, Willett.
Acquisition of data: Willett.
Analysis and interpretation of data: Chen, Rosner, Hankinson, Colditz, Willett.
Drafting of the manuscript: Chen.
Critical revision of the manuscript for important intellectual content: Chen, Rosner, Hankinson, Colditz, Willett.
Statistical analysis: Chen, Rosner, Colditz, Willett.
Obtained funding: Hankinson, Willett.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: The work reported herein was supported by the National Institutes of Health (grant P01 CA87969).
Role of the Sponsor: The sponsor had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Online-Only Material: The Author Video Interview is available here.
Additional Contributions: We thank the participants and staff of the Nurses' Health Study cohort for their valuable contributions. Participants did not receive compensation, and staff were not compensated outside of their salaries.