MILLAR, R. .; CHIN, A. ECG Quiz 59 Answer. SA Heart Journal, [S. l.], v. 18, n. 1, p. 68–71, 2021. DOI: 10.24170/18-1-4776. Disponível em: https://www.journals.ac.za/SAHJ/article/view/4776. Acesso em: 8 oct. 2025.