CHIN, A.; MILLAR, R. ECG Quiz 69. SA Heart Journal, [S. l.], v. 22, n. 3, p. 196–197, 2025. DOI: 10.24170/22-03-7668. Disponível em: https://www.journals.ac.za/SAHJ/article/view/7668. Acesso em: 8 oct. 2025.