S A, Arya Babu; JOHN, Ajo. Beta blockers in HF, reduced EF And Increased HR. Journal of Drug Delivery and Therapeutics, India, v. 12, n. 6, p. 224–226, 2022. DOI: 10.22270/jddt.v12i6.5730. Disponível em: https://jddtonline.info/index.php/jddt/article/view/5730. Acesso em: 24 may. 2026.