Author Contributions: Dr Kemper 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: Kemper, Cohn, Fant,
Acquisition of data: Kemper, Cohn, Dombkowski.
Analysis and interpretation of data: Kemper,
Cohn, Fant, Dombkowski, Hudson.
Drafting of the manuscript: Kemper.
Critical revision of the manuscript for important
intellectual content: Cohn, Fant, Dombkowski, Hudson.
Statistical analysis: Kemper, Dombkowski.
Obtained funding: Kemper.
Administrative, technical, or material support:
Financial Disclosures: None reported.
Funding/Support: This work was funded by the
Michigan Department of Community Health.
Role of the Sponsor: The Michigan Department
of Community Health participated in the design of this project, provided the
data, and reviewed and approved the manuscript.