Author Contributions: Dr Dagan 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. Dr Shouval is a primary
Study concept and design: Dagan, Leventhal,
Acquisition of data: Dagan, Anis, Slater, Shouval.
Analysis and interpretation of data: Dagan,
Anis, Slater, Ashur, Shouval.
Drafting of the manuscript: Dagan, Ashur, Shouval.
Critical revision of the manuscript for important
intellectual content: Dagan, Leventhal, Anis, Slater, Shouval.
Statistical analysis: Dagan, Anis, Slater.
Obtained funding: Dagan.
Administrative, technical, or material support:
Study supervision: Dagan, Leventhal, Shouval.
Financial Disclosures: None reported.
Funding/Support: This study was funded in part
by an unrestricted grant from GlaxoSmithKline Biologicals.
Role of the Sponsor: GlaxoSmithKline Biologicals
had no role in the design and conduct of the study; the collection, management,
analysis, and interpretation of the data; or the preparation, review, or approval
of the manuscript.
Acknowledgment: We thank Noga Givon-Lavi, PhD,
Pediatric Infectious Disease Unit, Soroka University Medical Center and the
Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva,
Israel, for her contribution to the statistical analysis and Ruth Almogi,
RN, Liver Unit, Hadassah-Hebrew University, Jerusalem, Israel, for coordinating
the active surveillance in the Jerusalem district.