Fig. 6From: Association of IL-6 174G/C (rs1800795) and 572C/G (rs1800796) polymorphisms with risk of osteoporosis: a meta-analysisBegg’s funnel plot to assess publication bias on IL-6 174G/C polymorphism in overall population (a: allele model, b: additive model, c: dominant model, d: recessive model)Back to article page