Fig. 4From: Association between growth differentiation factor 5 rs143383 genetic polymorphism and the risk of knee osteoarthritis among Caucasian but not Asian: a meta-analysisFunnel plots of the association between GDF5 rs143383 polymorphism and knee osteoarthritis (a allele model, b dominate model, c recessive model, d homozygote model, e heterozygote model)Back to article page