PE-373 Early Definite Stent Thrombosis of Drugs-Eluting Stents under the First Chosen Thienopyridine Antiplatelet (Ticlopidine versus Clopidogrel) : A Retrospective non-Randomized Study(PE063,Coronary Revascularization, PCI (DES) 5 (IHD),Poster Session (English),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)