Fig. 1From: The optimal antithrombotic strategy for post-stroke patients with atrial fibrillation and extracranial artery stenosis—a nationwide cohort studyStudy concept and the flowchart of the enrollment of study population. AF = atrial fibrillation; AP = anti-platelet agents; ECAS = extracranial artery stenosis NOACs = non–vitamin K antagonist oral anticoagulantsBack to article page