Contribution to authorship
HD participated in the conception and design of the study and drafting
the article. HB and XM participated in the acquisition of data,
analysis, and interpretation of data. YJN participated in revising the
article critically for important intellectual content. YSL participated
in the acquisition of data, analysis, and interpretation of data.
WRX participated in revising the article critically for important
intellectual content.
ZHW and ZYQ carried out the study design and approved the final version
to be submitted. All authors reviewed and approved the final manuscript.