Author contribution statement
Hai-Feng Pan developed the idea and proofread the manuscript. Sha-Sha Tao performed the statistical analysis and completed the manuscript writing. Yi-Qing Xu participated in the literature search and data collection. Xiao-Fan Dai, Yan Zhao, Ling-Qiong Jiang, Yang Fang and Ruo-Di Zhang participated in the creation of the charts and language editing. The submitted version has been viewed by all writers and is now ready for publishing.