The Effect of Acute Administration of the Aqueous Calyx Extract of Hibiscus sabdariffa on Blood pressure, Heart rate and Double Product of Apparently Healthy Human Subjects during Different Postures. NJPS [Internet]. 30. lipanj 2022. [citirano 21. svibanj 2026.];37(1):147-52. Dostupno na: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/2371