Contribution to authorship
HQ, CT, and RS contributed to the study design. YY, LW, YL and LW collected data. YY and XL analyzed data. YY and LW wrote the manuscript. MK contributed to the interpretation of results. PB and RS assisted with the detailed editing of the manuscript to get it to the appropriate language. HQ and CT 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.