OE-401 Three-Year Clinical Outcomes of Patients with Functionally Moderate Coronary Artery Stenosis after Deferral of Revascularization Based on Fractional Flow Reserve(OE68,Coronary Revascularization, PCI (Restenosis/Others) 4 (IHD),Oral Presentation (English),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)