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Figure 2 Serum IGF-I levels according to tertiles of angiographic outcome measurements in all participants. Data are presented as the least squares mean value ± SEM. Data were analyzed by analysis of variance (MLD p = 0.05; MSD p = 0.02; % diameter stenosis p = 0.38). *p < 0.05 vs. either low or medium tertile groups (post-hoc Tukey-Kramer test).