FRITHZ , Göran. Treatment of Severe Hypertension with Peroral Labetalol. Upsala Journal of Medical Sciences, [S. l.], v. 92, n. 1, p. 75–78, 1987. DOI: 10.3109/03009738709178680. Disponível em: https://ujms.net/index.php/ujms/article/view/6898. Acesso em: 13 nov. 2026.