I read with great interest the study by Guo et al. ([1][1]) that examined the efficacy of atrial fibrillation (AF) screening using smart devices with photoplethysmography technology. They noted the high… Click to show full abstract
I read with great interest the study by Guo et al. ([1][1]) that examined the efficacy of atrial fibrillation (AF) screening using smart devices with photoplethysmography technology. They noted the high positive predictive value of photoplethysmography signals. Patients with confirmed AF were then
               
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