Fig. 1From: Circulating inflammatory cytokines and risk of idiopathic pulmonary fibrosis: a Mendelian randomization studyIllustrates the diagram of the study design. (1) Selection of genetic variants that were proxies of the effect of circulating inflammatory cytokines. (2) Selection of IPF as the outcomes. 4) Two-step MR analysis estimating the causal effects of circulating inflammatory cytokines on the IPF.Back to article page