CHIN, A; MILLAR, RS. ECG Quiz 71. SA Heart Journal, [S. l.], v. 23, n. 1, p. 48–49, 2026. DOI: 10.24170/23-1-7878. Disponível em: https://scriptura.journals.ac.za/index.php/SAHJ/article/view/7878. Acesso em: 12 jun. 2026.