Overview Warfarin Versus Aspirin in Patients With Atrial Fibrillation and Chronic Kidney Disease Status: Withdrawn Trial end date: 2016-06-01 Target enrollment: Participant gender: Summary In this study, the investigators examine whether aspirin or warfarin is useful for atrial fibrillation patients with chronic kidney disease. Phase: Phase 4 Details Lead Sponsor: Seoul National University HospitalTreatments: AspirinWarfarin