Author Contributions: Drs Jahnke and Haddock had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Jahnke, Haddock, Poston, Lando.
Acquisition of data: Hyder.
Analysis and interpretation of data: Jahnke, Haddock, Poston.
Drafting of the manuscript: Jahnke, Haddock, Poston.
Critical revision of the manuscript for important intellectual content: Hyder, Lando.
Statistical analysis: Jahnke, Haddock.
Obtained funding: Jahnke, Haddock, Poston, Lando.
Administrative, technical, or material support: Jahnke, Haddock, Poston, Lando.
Study supervision: Jahnke, Haddock, Poston, Hyder.
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: This research was supported by National Cancer Institute grant 2RO1CA109153.
Role of the Sponsors: The National Cancer Institute 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.
Additional Contributions: Jennifer E. Taylor, PhD (Vanderbilt Medical School) provided assistance in project development and Chris Kaipust and Brianne Tuley, BA (National Development and Research Institutes Inc) provided research assistance. Dr Haddock and Ruth Malone, PhD, were principal investigators of this study. Compensation was provided to Ms Tuley but no one else received compensation.