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Chaudhry A, Toori KU, Saleem S. FREQUENCY AND RISK FACTORS OF FREQUENT EXACERBATIONS OF ASTHMA IN PATIENTS IN A TERTIARY CARE HOSPITAL: A HOSPITAL-BASED COMPARATIVE STUDY: Exacerbations of Asthma in Patients. Pak Armed Forces Med J [Internet]. 2018 Apr. 30 [cited 2024 Nov. 25];68(2):207-13. Available from: https://pafmj.org/PAFMJ/article/view/213