All the patients will be assessed by interview and by data collection from clinical database of the Institution for presence of cardiovascular risk factors and symptoms. The following risk factors will be considered: 1) Hypertension (defined as Arterial Pressure 140/80 mmHg or need for antihypertensive therapy); 2) Hypercholesterolemia (LDL Cholesterol >130 mg/dl or current treatment with lipid-lowering therapy); 3) Diabetes Mellitus (current need for antidiabetic or insulin therapy); 4) Smoking habit; 5) Obesity (Body Mass Index/BMI> 30); 6) Family history of cardiac disease. Symptoms will be classified as no symptoms, typical chest pain, atypical chest pain, dyspnoea on exertion. The pre-test cardiovascular risk of the patients will be determined by means of the Morise risk score.