Khola Iftikhar, Shamim Akhter, Kiran Fatima, Annie Talpur, Shamim Akhtar, and Shumaila Rehmani. “Prevalence of Chronic Respiratory Symptoms Among Active Smokers and Non-Smokers: A Population-Based Pulmonology Study”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 16, no. 1, Mar. 2026, pp. 1241-8, https://ijprt.org/index.php/pub/article/view/1649.