Fig. 10From: RETRACTED ARTICLE: Comparison of bone morphogenetic protein and autologous grafting in the treatment of limb long bone nonunion: a systematic review and meta-analysisPublication bias for postoperative healing rate after BMP or BMP combined with autologous bone versus autologous bone grafting for nonunion. a Begg’s funnel plots. b Egger’s funnel plotsBack to article page