Fig. 3From: Circulating metabolite profiles to predict response to cardiac resynchronization therapySerum relative concentrations of defined potential biomarkers of Isoleucine (a), Tryptophan (b) and Linoleic acid (c) in the discovery and validation sets. Orange bars represent non-responders to CRT; blue bars represent responders to CRT; and *** represent P < 0.001 when compared with non-responder group. All data are expressed as mean ± S.DBack to article page