Figures & data
Table 1 Index and Keyword Terms Used in the Databases
Table 2 Description of the Selected Studies: Objectives, Numbers of Studies and Most Important results
Figure 1 PRISMA 2020 flow diagram for new systematic reviews which included searches of databases, registers, and other sources.
![Figure 1 PRISMA 2020 flow diagram for new systematic reviews which included searches of databases, registers, and other sources.](/cms/asset/67a3c9e3-5d83-4d84-8d39-24d6370cdad0/djhc_a_12296050_f0001_c.jpg)
Table 3 The Results of the Methodological Quality Assessment of the Meta-Analysis