Aqeela Naeem, Asma Sabir, Kanwal Fatima Khalil, Asma Ambreen, Shumiala Awan, Jamila Khan 2022. Comparison of the Effectiveness of Long Acting Beta 2 Agonist and Long Acting Antimuscuranics with Long Acting Beta 2 Agonist/Long Acting Antimuscuranics Plus Inhaled Corticosteroids in preventing Exacerbations of patients with Chronic Obstructive Pulmona. Pakistan Journal of Medical & Health Sciences. 16, 09 (Oct. 2022), 318. DOI:https://doi.org/10.53350/pjmhs22169318.