NTUSI, N. Cardiology in times of uncertainty. SA Heart Journal, [S. l.], v. 18, n. 1, p. 2–5, 2021. DOI: 10.24170/18-1-4767. Disponível em: https://www.journals.ac.za/SAHJ/article/view/4767. Acesso em: 18 nov. 2025.