3. ≥ 2 months statin monotherapy with standard dose (atorvastatin ≤20mg q.d. or rosuvastatin ≤10mg q.d. or simvastatin ≤40mg q.d. or pravastatin ≤40mg q.d. or pitavastatin ≤4mg q.d or fluvastatin ≤80mg q.d. or lovastatin ≤40mg q.d.) and plan to continue the previous type and dose of statin