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To investigate the long-term outcome of Percutaneous transluminal intervention (PCI) for chronic total occlusion (CTO). The subjects were 606 patients (1,145 lesions) who were treated for CTO between January 1996 and December 2003 at our institution. Among them, 436 patients with early success and confirmed patency at the CTO by follow-up coronary angiography after 6 months were classified as the...
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