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Figure 3 Endothelium-dependent flow-mediated dilation (FMD) according to four categories based on low and high lipoprotein(a), or Lp(a), levels (cutoff, 30 mg/dl) with small and large apolipoprotein(a), or apo(a), sizes (cutoff, 22 kringle 4 repeats). n indicates number of subjects in each category. *p < 0.001 between small and large apo(a) size groups.