MILLAR, Rob Scott; CHIN, Ashley. ECG Quiz 53: Answer. SA Heart Journal, [S. l.], v. 16, n. 1, p. 52–54, 2019. DOI: 10.24170/16-1-3415. Disponível em: https://scriptura.journals.ac.za/index.php/SAHJ/article/view/3415. Acesso em: 12 jun. 2026.