“The Hypotensive Effect of the Aqueous Calyx Extract of Hibiscus Sabdariffa May Occur through the Attenuation of Autonomic Nervous System Activity”. Nigerian Journal of Physiological Sciences, ج 36, ش 2, دسامبر 2021, صص 203-9, https://doi.org/10.54548/njps.v36i2.9.