Author Contributions: As principal investigator,
Dr Chao 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: Chao, Thun, McCullough.
Acquisition of data: Thun, Rodriguez, Calle.
Analysis and interpretation of data: Chao,
Thun, Connell, McCullough, Jacobs, Flanders, Rodriguez, Sinha, Calle.
Drafting of the manuscript: Chao, Thun.
Critical revision of the manuscript for important
intellectual content: Chao, Thun, Connell, McCullough, Jacobs, Flanders,
Rodriguez, Sinha, Calle.
Statistical analysis: Chao, Connell, Flanders.
Obtained funding: Thun, Calle.
Administrative, technical, or material support:
Chao, Thun, McCullough.
Study supervision: Thun, Calle.
Funding/Support: The American Cancer Society
(ACS) funds the creation, maintenance, and updating of the Cancer Prevention
Study II Nutrition Cohort. All of the authors were employed by either the
ACS or the National Cancer Institute (NCI) during the course of the study.
Dr Chao was supported by the ACS and Public Health Service grant K07CA75062
from the NCI, National Institutes of Health, Department of Health and Human
Services, until her relocation to Zambia in July 2004.
Role of the Sponsor: Staff in the Epidemiology
and Surveillance Research Department of ACS designed and conducted the study,
including collection, analysis, interpretation, and presentation of the manuscript.
No staff at ACS or NCI, other than study investigators, reviewed or approved
Acknowledgment: We express sincere gratitude
to all CPS II Nutrition Cohort participants and to each member of the CPS
II Study Management Group.