Meta-analysis results.

a<p>Random-effects model.</p

Meta-analysis results of patient survival rate.

<p>Meta-analysis results of patient survival rate.</p

Egger test results of studies on complication incidence.

<p>Egger test results of studies on complication incidence.</p

Meta-analysis results of complication incidence.

<p>Meta-analysis results of complication incidence.</p

Flow of included studies.

<p>Flow of included studies.</p

Meta-analysis results of graft survival rate.

<p>Meta-analysis results of graft survival rate.</p

Egger test results of studies on patient survival rate.

<p>Egger test results of studies on patient survival rate.</p