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Figure 2 Bar graph illustrating mean measurements of the LAD wall thickness, luminal diameter and external diameter in the groups of normal volunteers and patients with CAD (A) and LAD wall thickness, luminal diameter and external diameter in the groups of patients with subclinical and significant (obstructive) LAD disease (B). Error bars represent standard deviation. CAD = coronary artery disease; LAD = left anterior descending coronary artery.