Khan I, Ul Haq Z, Shaheen A, Afridi MZ, Ahmad N, Abassi R, et al. SYSTEMATIC REVIEW AND META-ANALYSIS OF ASSOCIATION OF β2-ADRENERGIC RECEPTOR GENE POLYMORPHISMS WITH NOCTURNAL ASTHMA. J Postgrad Med Inst [Internet]. 2017 Aug. 10 [cited 2025 Dec. 5];31(3). Available from: http://www.jpmi.org.pk/index.php/jpmi/article/view/2105