MILLAR, R. S.; CHIN, A. ECG Quiz 47 - Answer. SA Heart Journal, [S. l.], v. 14, n. 3, p. 180–183, 2017. DOI: 10.24170/14-3-2719. Disponível em: https://www.journals.ac.za/SAHJ/article/view/2719. Acesso em: 8 oct. 2025.