Fig. 5From: Association between risk of asthma and gene polymorphisms in CHI3L1 and CHIA: a systematic meta-analysisBegg’s funnel plots of publication bias for the association between CHI3L1 rs4950928 (a) and CHIA rs10494132 (b) polymorphisms and asthma risk under the recessive models (GG vs. GC + CC; TT vs. TC + CC)Back to article page