Contribution to Authorship
HBQ, XL and XYL contributed to the protocol design. MMC and GQS
collected data. LS and YW analysed data. JZ, YS, HZ and PB contributed
to the interpretation of results. XYL drafted the manuscript and JHW
proofread the manuscript. HBQ and XL revised the final version and are
guarantors of this manuscript. All authors made substantial
contributions to the paper and read and approved the final manuscript.