Quantitative analysis of effects of salvianic acid a combined with hydroxy safflower yellow a on rat endothelial cells after hypoxic injury using the combination index method . Braz. J. Pharm. Sci. [Internet]. 2023 Feb. 27 [cited 2024 Jun. 30];58. Available from: https://revistas.usp.br/bjps/article/view/208683