Aqeela Naeem, Asma Sabir, Kanwal Fatima Khalil, Asma Ambreen, Shumiala Awan, Jamila Khan. 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 2022, 16, 318.