«The Aqueous Calyx Extract of Hibiscus sabdariffa Lowers Blood Pressure and Heart Rate via Sympathetic Nervous System Dependent Mechanisms» (2021) Nigerian Journal of Physiological Sciences, 29(2), pp. 131–136. Disponível em: https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1820 (Acedido: 16 maio 2026).