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Figure 3 Prevalence of atrial fibrillation (AF) and comorbid conditions in 1,871 patients with ischemic stroke and their age- and gender-matched controls, stratified by calendar decade. CAD = coronary artery disease; CHF = congestive heart failure; CS = cardiac surgery; DM = diabetes mellitus; HTN = hypertension; MI = myocardial infarction; VHD = valvular heart disease.