Contribution to Authorship
CC and CXY were responsible for data acquisition and data analysis. SJN
and AYR contributed to the quality assessment of included studies. CC,
CXY and WDH accessed and verified the data. WHT, WCQ , ZR, LCC and LWH
supervised the project and provided help at all stages. All authors
contributed to the writing of the manuscript and critically reviewed and
approved the final manuscript.