Ribeiro Moreira, Dalmo Antonio. “Electrocardiographic Changes That Identify Patients at Risk for Atrial Fibrillation”. JOURNAL OF CARDIAC ARRHYTHMIAS 31, no. 2 (April 1, 2018): 45–51. Accessed October 9, 2025. https://www.jca.org.br/jca/article/view/69.