9.0 Author Contributions
YZL, ASFK, CSAW, and AJWY performed database searching, article
screening, study selection and appraisal, and data extraction and
analysis. JWT, YZL, ASFK, CSAW, and AJWY conceived the idea and wrote
the manuscript. JWT supervised the study and resolved conflicts between
reviewers (YZL, ASFK, CSAW, and AJWY). CLT and MTL provided important
information for the completion of the manuscript. All authors read and
approved the final manuscript.