Safety and effectiveness of apixaban in comparison to warfarin in patients with nonvalvular atrial fibrillation: a propensity-matched analysis from Japanese administrative claims data
1. Department of Cardiology, Keio University School of Medicine, Tokyo, Japan;2. Bristol-Myers Squibb K.K., Tokyo, Japan;3. Department of Gerontology, School of Medicine, Iwate Medical University, Iwate, Japan