Table 1.

Inclusion and exclusion criteria

Inclusion criteria:	1. Patients with DES implanted, then treated with clopidogrel plus aspirin for 12 months
	2. Informed, written consent from the patient
Exclusion criteria:	1. Age <18 years
	2. Oral anticoagulation therapy
	3. Drug-eluting stent in an unprotected left main coronary artery
	4. Contemporaneous enrollment in a different clinical trial
	5. Malignancies or other comorbid conditions with a life expectancy <2 years
	6. Known allergy or intolerance to the study medications: aspirin and/or clopidogrel
	7. Other revascularization with a DES within nine months prior to this study
	8. Other revascularization with a BMS within four weeks prior to this study