Sarwar, Kashif Ali, Umer Naseer, Attia Tabassum, and Fatima Naseer. 2020. “Assessment of Inhalational Technique of Metered Dose Inhalers (pMDIs) Among Its Users”. Pakistan Journal of Chest Medicine 26 (1):15-21. https://www.pjcm.net/index.php/pjcm/article/view/643.