Fragmented QRS; as a new sign on ECG for pre-diagnosis of non-ST elevation myocardial infarction . Annals of Medical Research, [S. l.], v. 25, n. 4, p. 0584–0588, 2021. Disponível em: http://annalsmedres.org/index.php/aomr/article/view/1151. Acesso em: 19 apr. 2025.