 - Subjects with a combination of diabetes mellitus type I or II and renal impairment, defined as serum creatinine SCr 150 μmolL 1.7 mgdL for men and 133 μmolL 1.5 mgdL for women or creatinine clearance CrCl 50 mLmin calculated according to Cockroft-Gault formula, referred for coronary angiography with or without PCI. 