What is the purpose of the Japanese Nonvalvular Atrial Fibrillation-Embolism Secondary Prevention Cooperative Study Group?
The Japanese Nonvalvular Atrial Fibrillation-Embolism Secondary Prevention Cooperative Study Group is a multicenter, prospective, randomized trial designed to investigate the optimal intensity of warfarin therapy for secondary prevention of stroke in patients with nonvalvular atrial fibrillation.