Author Contributions: Dr Sanders 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: Sanders, Kotowicz, Young, Nicholson.
Acquisition of data: Sanders, Stuart.
Analysis and interpretation of data: Sanders, Stuart, Williamson, Simpson, Kotowicz, Nicholson.
Drafting of the manuscript: Sanders, Stuart.
Critical revision of the manuscript for important intellectual content: Sanders, Williamson, Simpson, Kotowicz, Nicholson.
Statistical analysis: Sanders, Stuart, Williamson, Simpson.
Obtained funding: Sanders, Kotowicz, Young, Nicholson.
Administrative, technical, or material support: Stuart, Nicholson.
Study supervision: Sanders, Nicholson.
Financial Disclosures: None reported.
Funding/Support: The study was supported by project grant No. 251682 from the National Health and Medical Research Council and by the Australian Government Department of Health and Ageing.
Role of the Sponsor: The funding organizations were independent of the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.
Additional Contributions: We thank Barwon Health employees Paul Muir, B Pharm, BA, FSHP (clinical trials pharmacist), Elizabeth Merriman, BSc (study coordinator 2005 to 2006), and Cathy Verecondi (administrative officer) for their help as part of their regular duties and gratefully acknowledge the 2317 women who participated in the study.
This article was corrected online for error in data on 5/11/2010, prior to publication of the correction in print.