Authors’ contributions
WL
JQ contributed to study planning, article selection, data collection, data analysis and interpretation, as well as writing and revising the manuscript. WL contributed to study planning, article selection, data collection, data analysis and interpretation, as well as writing and revising the manuscript. DW contributed to study planning, article selection, data collection, data analysis and interpretation, and revising the manuscript. FQ contributed to data analysis such as risk of bias with studies, guidance for meta-analysis process, drafting and revising the manuscript. LS contributed to conception of the study, study planning, article selection, data interpretation, and revising the manuscript. All authors reviewed and approved the final version of the manuscript.