1. Kitasato University School of Pharmacy, Tokyo, Japan
2. Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
3. Department of Clinical Pharmacology and Therapeutics, Jikei University School of Medicine, Tokyo, Japan
4. Survey on Medication Adherence to Anticoagulant Drugs and Investigation of Improvement of Medication Adherence by an Educational Programin Nonvalvular Atrial Fibrillation