Fig. 1From: Causal impact of gut microbiota and associated metabolites on pulmonary arterial hypertension: a bidirectional Mendelian randomization studyStudy overview. Legend: SCFA, short chain fatty acids; TMAO, trimethylamine N-oxide. The figure illustrates the design of the study. In this study, we aim to investigate the causal relationship between gut microbiota, associated metabolites and PAH, and explore whether dietary patterns mediate the above causal relationship using two-sample Mendelian randomizationBack to article page