Author contributions
RL proposed and designed the study. SL, JT, YC conducted the statistical analysis. BC and XM completed the literature search and data extraction. RL, SL, and TX drafted the first version of the manuscript. JT, YC, and BC participated in the critical revision of the manuscript. TX is the guarantor of this work and, as such, has full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. All authors reviewed and approved the final version of the manuscript.