CHIN, A.; MILLAR, R. S. ECG Quiz 44 Question. SA Heart Journal, [S. l.], v. 13, n. 4, p. 308, 2017. DOI: 10.24170/13-4-1588. Disponível em: https://www.journals.ac.za/SAHJ/article/view/1588. Acesso em: 8 oct. 2025.