KLUG, E. The cardiorenal syndrome. SA Heart Journal, [S. l.], v. 5, n. 3, p. 124–127, 2017. DOI: 10.24170/5-3-2039. Disponível em: https://www.journals.ac.za/SAHJ/article/view/2039. Acesso em: 8 oct. 2025.