Author Contributions: Dr Hoffmann 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: Hoffman, Schmitz,
Acquisition of data: Hoffman, Shi, Schmid,
Lieberknecht, Schulze, Ludwig, Kroschel, Jahnke, Haerer.
Analysis and interpretation of data: Hoffman,
Shi, Lieberknecht, Schulze, Ludwig, Kroschel, Jahnke, Haerer, Aschoff.
Drafting of the manuscript: Hoffman, Shi, Schmid,
Critical revision of the manuscript for important
intellectual content: Hoffman, Schmitz, Lieberknecht, Schulze, Ludwig,
Kroschel, Jahnke, Haerer, Brambs.
Statistical analysis: Hoffman, Shi, Lieberknecht.
Obtained funding: Brambs.
Administrative, technical, or material support:
Hoffman, Schmid, Lieberknecht, Haerer, Aschoff.
Study supervision: Hoffman, Lieberknecht, Aschoff.
Financial Disclosures: None reported.
Funding/Support: This study was funded by the
State Government of Baden-Wuerttemberg, Germany. The computed tomography equipment
was partially provided by Philips Medical Systems, Best, the Netherlands,
on the basis of a beta-site contract.
Role of Sponsor: Neither the State Government
of Baden-Wuerttemberg nor Philips Medical Systems had any involvement in the
design or conduct of this study; data management and analysis; or manuscript
preparation and review or authorization for submission.
Acknowledgment: We thank Bonnie Hami, MA, of
the Department of Radiology, University Hospitals of Cleveland, Cleveland,
Ohio, for her editorial assistance in the preparation of the manuscript.