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Figure 5: (a) Begg’s funnel plot for publication bias test of urolithiasis risk associated with the CaSR A986S polymorphism. (b) Begg’s funnel plot for publication bias test of urolithiasis risk associated with the CaSR R990G polymorphism. (c) Begg’s funnel plot for publication bias test of urine calcium concentration associated with the CaSR A986S polymorphism. (d) Begg’s funnel plot for publication bias test of urine calcium concentration associated with the CaSR R990G polymorphism.