Xing-lu Zhou; Wen Xu; Xiao-xiao Tang; Lai-sheng Luo; Jiang-feng Tu; Chen-jing Zhang; Xiang Xu; Qin-dong Wu; Wen-sheng Pan Our study had several limitations. First, all studies included in our meta ...
Medline (using PubMed as the search engine), EMBASE, Web of science, Cochrane library and China National Knowledge Infrastructure (CNKI) databases were searched by two reviewers (XZ and WX ...
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