1.
Ahmad S, Ahmad J, Ahmad F, Ahmad Z. Safety and efficacy of formoterol/tiotropium bromide and formoterol/glycopyrronium combination in patients with chronic obstructive pulmonary disease. Int J Res Med Sci [Internet]. 2023 Mar. 29 [cited 2025 Nov. 27];11(4):1239-45. Available from: https://www.msjonline.org/index.php/ijrms/article/view/11762