<p>A flow chart showing the details of search strategy and the trials selection process according to the including and excluding criteria.</p
Flow diagram of search strategy used for systematic review and meta-analysis.</p
<p>Flow chart of study selection based on the inclusion and exclusion criteria.</p
<p>Flow chart of study selection based on the inclusion and exclusion criteria.</p
<p>Flow chart illustrating the search process and the reasons for excluding studies.</p
<p>Flowchart of search strategy and selection of studies for inclusion in review.</p
<p>Search strategy and flow chart of screened, excluded, and eventually analyzed articles.</p
<p>Flow chart summarizing the process of literature search and study selection.</p
<p>Flow chart of systematic search for randomized or quasi-randomized controlled trials.</p
Flow diagram depicting the steps of search process, study selection and inclusion of studies that me...
<p>PRISMA flow chart of the results from the performed search strategy and selection process.</p
<p>Study flow-chart illustrating the literature search and eligible study selection process.</p
<p>Flow diagram of search strategy and study selection for the meta-analysis.</p
Flow chart illustrating the phases of the literature search and study selection.</p
<p>Flow chart of literature search and study selection, with the specification of reasons.</p
<p>Flow chart of study study selection based on the inclusion and exclusion criteria.</p
Flow diagram of search strategy used for systematic review and meta-analysis.</p
<p>Flow chart of study selection based on the inclusion and exclusion criteria.</p
<p>Flow chart of study selection based on the inclusion and exclusion criteria.</p
<p>Flow chart illustrating the search process and the reasons for excluding studies.</p
<p>Flowchart of search strategy and selection of studies for inclusion in review.</p
<p>Search strategy and flow chart of screened, excluded, and eventually analyzed articles.</p
<p>Flow chart summarizing the process of literature search and study selection.</p
<p>Flow chart of systematic search for randomized or quasi-randomized controlled trials.</p
Flow diagram depicting the steps of search process, study selection and inclusion of studies that me...
<p>PRISMA flow chart of the results from the performed search strategy and selection process.</p
<p>Study flow-chart illustrating the literature search and eligible study selection process.</p
<p>Flow diagram of search strategy and study selection for the meta-analysis.</p
Flow chart illustrating the phases of the literature search and study selection.</p
<p>Flow chart of literature search and study selection, with the specification of reasons.</p
<p>Flow chart of study study selection based on the inclusion and exclusion criteria.</p
Flow diagram of search strategy used for systematic review and meta-analysis.</p
<p>Flow chart of study selection based on the inclusion and exclusion criteria.</p
<p>Flow chart of study selection based on the inclusion and exclusion criteria.</p
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