Rahman, Nabi, and Ubaid Ullah. “Comparison of Inhaler Technique Between Dry Powder Inhalers and Metered Dose Inhalers Among Adults With Obstructive Airway Disease”. Pakistan Journal of Chest Medicine 31, no. 4 (December 2, 2025): 291–298. Accessed March 11, 2026. https://pjcm.net/index.php/pjcm/article/view/1072.