Abbas SA, Saboor S, Kanani H. Evaluating the technique of using inhalation device (MDI) without holding chamber/spacer in asthma and Chronic Obstructive Pulmonary Disease. Pak J Chest Med [Internet]. 2019Sep.17 [cited 2026Apr.30];24(4):191-6. Available from: http://pjcm.net/index.php/pjcm/article/view/560