Each patient will be asked to answer electronic questionnaires to collect personal information and medical history (social status, previous disease or surgical interventions, risk factors and family history for cardiovascular disease, drug use). Other relevant clinical data as well as measures of clinical outcomes will be collected by medical records. A 1-year food frequency questionnaire will be used to investigate dietary habits. Electrocardiographic, blood pressure, anthropometric measurements will be collected using standardized methods. During the hospitalization, time in intensive therapy, post-surgical course, specific drug therapy, post-surgical complications, fatal and non-fatal cardiovascular events, re-intervention of revascularization and bypass occlusion will be recorded.