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Figure 2 Coronary Artery Diameter Change to ACh Injection

Response of coronary artery diameter to intracoronary injection of acetylcholine (ACh) (50 µg) at baseline and after 6 months of treatment at the spasm segment (left) and the nonspasm segment (right) in the statin group (orange; n = 63) and nonstatin (blue; n = 66) group.