<p>Flow diagram indicating the process of selecting articles for meta-analysis.</p
<p>Flow chart depicting the selection process of studies included in the meta-analysis.</p
<p>Flow chart depicting the selection process of studies included in the meta-analysis.</p
<p>Flow diagram sketches the literatures identified, screened, included and excluded in meta-analysi...
<p>Flow diagram for the selection of articles for inclusion in the meta-analysis.</p
<p>Flow diagram showing the selection process of studies included in the meta-analysis.</p
<p>Flow diagram of selection process for selected studies included in the meta-analysis.</p
Flow diagram for the study selection process for inclusion in this meta-analysis.</p
<p>Flow diagram of studies through the different phases of the meta-analysis.</p
<p>Flow diagram of identification of relevant studies in the present meta-analysis.</p
<p>Flow diagram of the selection of studies for the meta-analysis Quantitative synthesis.</p
<p>Flow diagram of the process (and the reasons) of selecting and excluding studies for this meta-an...
<p>Flow diagram for study selection and specific reasons for exclusion in the meta-analysis.</p
<p>Flow diagram of the selection of studies and specific reasons for exclusion from the present meta...
<p>Flow chart showing the process for selecting eligible studies in the meta-analysis.</p
<p>Flow chart explaining the selection of the 12 articles included in the meta-analysis.</p
<p>Flow chart depicting the selection process of studies included in the meta-analysis.</p
<p>Flow chart depicting the selection process of studies included in the meta-analysis.</p
<p>Flow diagram sketches the literatures identified, screened, included and excluded in meta-analysi...
<p>Flow diagram for the selection of articles for inclusion in the meta-analysis.</p
<p>Flow diagram showing the selection process of studies included in the meta-analysis.</p
<p>Flow diagram of selection process for selected studies included in the meta-analysis.</p
Flow diagram for the study selection process for inclusion in this meta-analysis.</p
<p>Flow diagram of studies through the different phases of the meta-analysis.</p
<p>Flow diagram of identification of relevant studies in the present meta-analysis.</p
<p>Flow diagram of the selection of studies for the meta-analysis Quantitative synthesis.</p
<p>Flow diagram of the process (and the reasons) of selecting and excluding studies for this meta-an...
<p>Flow diagram for study selection and specific reasons for exclusion in the meta-analysis.</p
<p>Flow diagram of the selection of studies and specific reasons for exclusion from the present meta...
<p>Flow chart showing the process for selecting eligible studies in the meta-analysis.</p
<p>Flow chart explaining the selection of the 12 articles included in the meta-analysis.</p
<p>Flow chart depicting the selection process of studies included in the meta-analysis.</p
<p>Flow chart depicting the selection process of studies included in the meta-analysis.</p
<p>Flow diagram sketches the literatures identified, screened, included and excluded in meta-analysi...
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