MILLAR, R. S.; CHIN, A. ECG Quiz 43 Question. SA Heart Journal, [S. l.], v. 13, n. 3, p. 252, 2017. DOI: 10.24170/13-3-1662. Disponível em: https://www.journals.ac.za/SAHJ/article/view/1662. Acesso em: 8 oct. 2025.