Blood sampling for routine (haemachrome and differential cells blood count, bilirubin, cholesterol, high density lipoprotein, low density lipoprotein, glycemia, blood urea, blood electrolytes (sodium, potassium, chloride), glutamic-oxaloacetic transaminase, glutamic-pyruvic transaminase, γGT, triglycerides, creatinine, uric acid, creatine phosphokinase, glycosylated haemoglobin).