**2. Objectives**

**1.** To compare the efficacy and safety of Clopidogrel with Aspirin and Aspirin plus Clopi‐ dogrel in patients undergoing surgical coronary revascularisation in the immediate postoperative period and 1 year after coronary artery bypass grafting depending on the type of the lesion, on the type of the surgical procedure and on the associated risk factors for gastrointestinal bleeding.

