After stabilization on atorvastatin @ mg , hypercholesterolemic subjects @ years at high/very high risk for CHD and not at LDL-C < @ mmol/L ( with atherosclerotic vascular disease -LSB- AVD -RSB- ) or < @ mmol/L ( without AVD ) were randomized to ezetimibe @ mg plus atorvastatin @ mg or uptitration to atorvastatin @ mg ( @ weeks ) followed by uptitration to @ mg ( additional @ weeks ) .