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Figure 2 Cumulative distribution curves of minimal lumen diameter (MLD) at preintervention, at postintervention, and at follow-up. Closed circle, closed square, and closed triangle demonstrate MLD in troglitazone group at preintervention, at postintervention, and at follow-up, respectively. Open circle, open square, and open triangle demonstrate MLD in control group at preintervention, at postintervention, and at follow-up, respectively.