Additional file 1.

Supplementary tables S1-S2. Supplementary table S1: Interaction between PADI4 haplotypes and smoking in susceptibility to anti-CCP-positive and -negative RA. Supplementary table S2: Interaction between PADI4 haplotypes and smoking in susceptibility to erosive and non-erosive RA.

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Bang et al. Arthritis Research & Therapy 2010 12:R115   doi:10.1186/ar3051