Fig. 5From: Appraising growth differentiation factor 15 as a promising biomarker in digestive system tumors: a meta-analysisPublication bias judged by Deek’s funnel plot asymmetry test for the overall pooled diagnostic effect of (a) DST and (b), and Begg’s funnel plot for the overall pooled prognostic effect of (c) DST, (d) PC, and (e) CRCBack to article page