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Forest plots reporting the mean involvement rate (with 95% CI) of each metastasis site over the metastatic cases: (A) lung metastasis rate [9,19,21,22,23,25,27,28,29,34,36,37,38,39,40,42,43,44,45,46,47]; (B) bone metastasis rate [9,21,23,25,28,29,34,36,37,38,39,40,42,43,44,46]; (C) brain metastasis rate [19,23,25,29,34,36,37,38,39]; (D) skin metastasis rate [27,29,36,37,38,43]; (E) liver metastasis rate [9,23,25,27,28,29,36,37,38,39,40,42,43,44,46].
