Stroke and systemic embolism (prevention, non-valvular atrial fibrillation) - apixaban: clarification Stroke and systemic embolism (prevention, non-valvular atrial fibrillation) - apixaban: NICE clarification letter to the manufacturer Stroke and systemic embolism (prevention, non-valvular atrial fibrillation) - apixaban: Bristol-Meyers Squibb and Pfizer response to clarification points This page was last updated: 21 January 2013